Sickle cell anemia, a recessive deadly blood cell disease, is much more common in tropical climates because carriers (heterozygotes) are resistant to a deadly parasitic disease carried by mosquitoes (malaria). Given this information which of the following scenarios is a possibility?
A. The widespread availability of any drug that protects a population from malaria will have the side effect of reducing deaths from sickle cell anemia over many generations.
B. Having malaria will begin to give immunity to sickle cell anemia as well.
C. Populations in areas where there are fewer mosquitoes will have more and more sickle cell anemia as time goes on.
D. Genetie drift will always be so strong in these populations that none of this selection will be impactful, even for extremely large populations.
E. Over many generations the mosquitses must develop sickle cell anemia too.

Answers

Answer 1

Answer:

B. Having malaria will begin to give immunity to sickle cell anemia as well.

Explanation:

Malaria is one of the common disease caused by mosquitoes. It is believed that sickle cell disease gets deadly when malaria happens to the person. Sickle cell disorder is the reduction in healthy red blood cells which can carry oxygen throughout the body.


Related Questions

Explain the application of the principle of genetics in agriculture and medicine

Answers

applications of biotechnology in the field of agriculture and medicine are:

Antibiotics are created from the plants for human and animal use. An antibiotic protein in stock feed is more cost-effective than traditional antibiotic production.

It helps in the production of genetically modified crops that produce crops with desired characteristics.

Gene therapy is used for the diagnoses of diseases like cancer and Parkinson’s disease.

Genetic testing is another technique that is used to diagnose any genetic diseases in theparents.

DNA fingerprinting is used in the identification of criminals and solving paternity disputes.

Was this answer helpful?

Answer:

Application # 2. Agriculture:

The contribution of genetics in the field of agriculture is remarkable in two ways, viz

(i) In the improvement of crop plants and

(ii) In the improvement of domestic animals

what is photosynthesis​

Answers

Answer:

The process of making food by Green plants (autotroph) is called photosynthesis. For performing photosynthesis water, sunlight and carbon dioxide are used by the plants.

They take sunlight from sun, water from soil and carbon dioxide gas from the air present around us. The leaves have small holes called stomata which allows air to enter the plant. Leaves also contains chlorophyll in them which traps sunlight and helps in making food. Roots of plants absorbs water and Minerals from the soil and transfers them leaves through stem.

The chemical equation for the photosynthesis

is -

carbon dioxide + water -> glucose + oxygen + energy

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

What's photosynthesis?

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

Photosynthesis is the process in which green plants derive their food (nutrients and water) through the capturing of light energy (sunlight) and using it to convert carbon dioxide (CO2) and water (H2O) into oxygen (O2) and other substances (compounds) that are rich in energy. Chlorophyll a green pigment present in plants is used in this process.

__________________

Formula ⟶ [tex]\boxed{\bf\:6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2} [/tex]

__________________

So, the products of photosynthesis are [tex]\large\boxed{\boxed{\bf\:C_6H_{12}O_6 + 6O_2}}[/tex]

Pls I need help with the test variable and outcome plssssssss help meee

Answers

Answer:

Lengthy answer my guy

Explanation:

You could just independently test each material's makeup process.

Or just make an example with a glass container of which includes heated air coming in through a tube from outer sources.

And the water slowly evaporating as a result?

I don't know how the teacher explained it to you boss.

The secretion of ADH is caused by _ in osmotic pressure of blood. a)increase b)decrease

Answers

Answer:

the secretion of adh is cauesd by increase in osmotic pressure of blood


The_____states that the distribution of the sample means tend to be
approximately normal as sample sizes increase.
A. Intermediate Value Theorem
B. Sample Values Theorem
C. Central Limit Theorem
D. Approximate Values Theorem

Answers

Answer: C. central limit theorem

Explanation:

Heart is to pump blood as stomach is to​

Answers

Answer:

hcl is present to clean other harmful acids

If you compare the histone modifications at the imprinting center on the maternal and paternal chromosomes, you would expect to see ____________ on the maternal chromosome and ____________ on the paternal chromosome.
a. activating marks like H3K9 acetylation; silencing marks like H3K9 methylation
b. silencing marks like H3K9 methylation; activating marks like H3K9 acetylation

Answers

Answer:

b. silencing marks like H3K9 methylation; activating marks like H3K9 acetylation

Explanation:

Genomic imprinting is an epigenetic phenomenon that leads to parent-of-origin-specific monoallelic expression, thereby genes under imprinting are differentially expressed depending on their parental origin. Genomic imprinting involves DNA methylation, histone modification such as histone 3 lysine 9 methylation (H3K9) and non-coding RNA regulatory epigenetic pathways, which act together to silence one parental gene form or 'parental allele'. Maternal imprinting occurs when the maternal allele is silenced (usually caused by methylation of the maternal allele), whereas paternal imprinting occurs when the paternal allele is silenced (methylation of the paternal allele). Moreover, H3K9 acetylation is connected with active promoters (gene transcription). The imprinted genes are generally grouped in genomic regions called imprinting centers (ICs) that regulate gene expression according to the parental origin.

Problems that animal species overcome by their dispersion

Answers

killing other animals.........................

M. magneticum can only survive in low-oxygen environments, which are typically found near the bottom of bodies of water.

a. True
b. False

Answers

b good luck on future quizzes !!

Many anti-evolutionists believe that since science doesn't have answers for all questions; scientific conclusions are not necessarily correct. This attitude reflects a failure to understand the nature of science. What is the general nature of scientific thinking? In what way is science "self correcting"?

Answers

Answer:

Explanation:

they have proven it.

The nature of science and general nature of scientific thinking is discussed as follows:

Scientific thinking:

A proper and orderly method of investigation on the specific idea to formulate testable hypotheses is called scientific thinking. To test these hypotheses, experiments are required.

The general nature of scientific thinking:

a systematic method of investigation. It involves recognition of different variables, making a hypothesis, and testing and validation of the hypothesis. any scientific theory or statement is not certain and valid forever in nature as new evidence can be contradictory.

Self-correcting:

Hypotheses are tested by a specific research design. Every test found new unknown variables that will influence the original hypotheses. It is the self-corrective feature of science.

Learn more about the scientific method:

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explain why an increase in tempreture causes an increases on enzyme activity

Answers

Answer:

because they both work togther

Explanation:

Which of the following iS a possible future milestone in environmental policy?
a.
water pollution policy
b. implementation of a cap and
dividend policy
C.
mandatory environmental assessments
d environmental impact statements

Answers

Answer:

a. water pollution policy

Why do organisms do mitosis? A. To make more body cells, like skin cells or liver cells for example B. To make gametes (sperm or (s66a C. Just for fun! D. All of the above

Answers

Answer:

A

Explanation:

To make more body cells,like skin cells or liver cells.

since it's responsible for making somatic cells.

I hope this helps

How are human affiliative and aggressive behaviors different from what is seen in nonhuman primates? Provide specific examples.

Answers

Answer:

Humans are less aggressive as compared to non-human primates.

Explanation:

Human affiliative and aggressive behaviors are different from nonhuman primates because humans do more friendly and peaceful acts and are less aggressive in anger as compared to non-human primates which are less friendly and more aggressive in anger. Due to more aggressive behaviour of non-human primates causes more damaged to other animals and humans as compared to humans who is less damaging and aggressive.

HELP ASAP I WILL GIVE BRAINLIST

The picture shows two containers filled with a gas, both initially at room temperature.

Which statement is correct?

The gas particles in both containers have the same average kinetic energy because they have equal number of particles.

The gas particles in both containers have the same average kinetic energy because they have the same volume.

The average kinetic energy of the gas particles is greater in container A because it has a lower temperature.

The average kinetic energy of the gas particles is greater in container B because its particles move faster.

Answers

Answer:

1) CO₂

2) 0.2551 g

Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

MgCO₃ + 2HCl → MgCl₂ + H₂O + CO₂

1) The gas produced is CO₂.

2) Calculate mass of CaCO₃:

(0.5236 g) (0.4230) = 0.2215 g CaCO₃

Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

Answer:

The average kinetic energy of the gas particles is greater in container B because its particles move faster.

Explanation:

Which of the following changes to Earth is caused predominantly by living organisms?
A. The production of dirt.
B. The release of free nitrogen into the atmosphere.
C. The release of sulfur dioxide into the atmosphere.
D. The movement of air currents by convection cells.

Answers

Which of the following changes to Earth is caused predominantly by living organisms?

A. The production of dirt.B. The release of free nitrogen into the atmosphere.C. The release of sulfur dioxide into the atmosphere.D. The movement of air currents by convection cells.

The production of dirt is cause predominantly by living organisms

This production can be caused through emission of pollution in the form of air, water, soil, noise or e-waste.

What is Pollution?

Pollution is defined as the introduction of unwanted harmful elements in the form of release of gaseous toxic substances which result into polluting the environment.

These pollutants can be both natural and anthropogenic.

Natural pollutants are volcanic ash, river sediments

Anthropogenic pollutants are chemicals released from industries vehicular emission.

Majorly pollution are of four types- Air, Water, Soil and Noise. Recently another pollution in the form of e-waste is also prominent.

Effects of pollution on environment:

1. Biomagnification describes situations where toxins (such as heavy metals)  passes through trophic levels, becoming exponentially more concentrated in the process.

2. Carbon dioxide emissions cause ocean acidification, the ongoing decrease in the pH of the Earth's oceans as CO2 becomes dissolved.

3. The emission of greenhouse gases leads to global warming which affects ecosystems in many ways.

4. Nitrogen oxides are removed from the air by rain and affect the land which can change the species composition of ecosystems.

5. Smog and haze can reduce the amount of sunlight received by plants to carry out photosynthesis and leads to the production of tropospheric ozone which damages plants.

6. Sulfur dioxide and nitrogen oxides can cause acid rain which lowers the pH value of soil.

7. Organic pollution of watercourses can deplete oxygen levels and reduce species diversity.

Rest three options are majorly natural process.

Option B focuses on release of free nitrogen into atmosphere which is one of the important step of Nitrogen Cycle.

Option C focuses towards release of Sulfur Dioxide into atmosphere. This process is caused either naturally or anthropogenically. Thus cant blame solely the anthropogenic factor for its release.

Option C is the total natural process i.e. Climatological Process where air currents are regulated by Convection Cells and regulate based on different natural factors.

To learn more about the pollution here

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Bilirubin is not only increased in liver disease but other conditions that cause an increase of white blood
cells,
O a.
True
ob
False

Answers

Answer:

false

Explanation:

they increase of red blood cells

A solid form of precipitation is _____________.

Answers

Answer:

precipitate

Explanation:

the examples would be; evaporation, snow, hail, or clouds.

Assuming that a person going to community college can't afford to go to a four-year college is an example of a) a generalization. b) discrimination. O c) a stereotype. O d) tolerance.

Answers

Answer: stereotype

Explanation: i am not sure, but my intutions says that.

When the tetrads are formed
during meiosis, what is the
benefit of crossing over?
A. The chromosomes double in number.
B. The chromosomes exchange genetic
information.
C. The chromosomes are reduced by half.

Answers

Answer:

B. The chromosomes exchange genetic information.

Explanation:

Crossing over of tetrads during meiosis is very important for the exchange of genetic information.

This step of meiosis allows for each chromosome to be genetically unique and distinct from the others, creating genetic variation.

Crossing over does not double the number of chromosomes or reduce the number. The number of chromosomes stays the same.

So, the correct answer is B. The chromosomes exchange genetic information.

g The greater tubercle of the humerus is analog to the _______________. Group of answer choices lesser tubercle of the humerus lesser trochanter of the humerus greater trochanter of the femur lesser trochanter of the femur

Answers

Answer:

greater trochanter of the femur

Explanation:  

Analogous structures refer to those that are similar morphologically and even have a similar function in the organism, but their genetic origin differs.

The origin and embryological development of these organs are not the same.  

Both structures are muscles insertion points or surfaces. These muscles are related to the extremity movement.

chất xám trong trung ương thần kinh được cấu tạo từ đâu

Answers

Answer:

Chất xám được cấu tạo chủ yếu bởi thân của các nơ ron đóng vai trò trung tâm của các phản xạ tủy.

Explanation:

Type of symbiosis Suppose friendly ants fed on sugary droplets excreted from a caterpillar, but did nothing to help the caterpillar. Assuming that taking the sugar does not hurt the caterpillar, what type of symbiotic relationship is this

Answers

Answer:

Commensalism

Explanation:

All organisms in nature interact with other organisms in different ways. Symbiotic interactions involve a relationship between two or more organisms of different species in which one or all of them turn to be beneficiated by that relationship. These species create permanent mutual dependence.  

Symbiotic interactions include:  

• Amensalism refers to a biological relationship established between two organisms, in which one of them avoids the growth, development, or survival of the other one. In this interaction, one of the organisms seems to be strongly affected by the other one. Meanwhile, the other organism does not seem to be affected at all.  

Commensalism: In this case, the fitness of only one of the species seems to increase, while the other species is not affected at all, nor positively or negatively. The unaffected species might provide food or refuge to the other species, which is benefited.  

• Parasitism: In this case, one of the species is beneficiated, while the other suffers a consequence, reducing its fitness. These interactions are mainly about nutrition, although there might be other benefits too. Some parasite species might coexist with their host, while some others might get them ill to the point of causing death.  

• Mutualism: The interaction is favorable for both species. Their fitness increases with these interactions, although they do not need this relationship to survive. The degree of benefits might vary among species or might be equal.

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The exposed symbiotic example is a commensalism case. The ant is benefited from taking the sugary droplets. Its fitness increases. But ants do not make any harm to the caterpillar. In fact, it has no effect on them at all, no possitive nor negative. The caterpillar´s fitness is not influenced by the ant.

A woman who is a carrier for #1 hemophilia and a man that does not have the
condition have children. What is the probability that they will have a child
with the condition being studied? What is the gender of that child?


#2 In plants, inflated pea pods are dominant to constricted pea pods. Two pea pods both heterozygous for pod shape are crossed. What is the probability that they could produce constricted pea pods ?


#3 A woman that is heterozygous for Huntington's disease and a man that does not have the condition have children . What is the probability that their children inherit the Huntington's gene ?

#4 A woman that is heterozygous for type A blood and a man that is heterozygous for type B blood have children. What are the possible blood types of their children?

#5 Two people are both unknowingly carriers for the cystic fibrosis gene. What is the probability that they will have children with cystic fibrosis?

Answers

Answer:

Explanation:

A woman who is a carrier for #1 hemophilia and a man that does not have the condition have children. What is the probability that they will have a child with the condition being studied? What is the gender of that child?

if the baby gets the Y chromosome from the father it will be a boy. If the boy gets his mother's X chromosome with the hemophilia gene he will have hemophilia. If he inherits his mother's other X chromosome, he will have normal blood clotting. If the baby gets the X chromosome from the father it will be a girl.

#4 A woman that is heterozygous for type A blood and a man that is heterozygous for type B blood have children. What are the possible blood types of their children?

One parent with A and another with B can produce a child with A, B, AB or O blood types.

#5 Two people are both unknowingly carriers for the cystic fibrosis gene. What is the probability that they will have children with cystic fibrosis?

If both parents are carriers there is a 1 in 4 (25 percent) chance that both will pass on the non-functioning gene, which would result in a pregnancy affected with cystic fibrosis.

#3 A woman that is heterozygous for Huntington's disease and a man that does not have the condition have children . What is the probability that their children inherit the Huntington's gene ?

Huntington's disease (HD) is what is called a dominant genetic disease. What this usually means is that a child only has a chance of getting a disease like this if a parent has it too. But parents without HD can have a child with HD. This is true of any dominant genetic disease

What type of cells in placozoans help with the digestion of food?
A. gland cells
B. cylinder cells
C. cover cells
D. fiber cells

Answers

Answer:

Its gland cells  

Explanation:

Which label should Megan add to complete her chart?
O Maple, 19%
O Maple, 29%
O Maple, 39%
O Maple, 49%

Answers

Answer:

Megan should add Maple, 39%

OAmalOHopeO:

Answer: The answer is C

Explanation:

just add them up unlit you get a total of 100 percent. But 39 is the correct answer 7+12+15+27+39=100

what are the components of blood

Answers

1 . RBC red blood cells

2. WBC white blood cells.

Answer:

plasma, RBCs, WBCs, platelets.

Nutrient Food source Role in the body Vitamin A Iron Iodine Vitamin D Protein​

Answers

Answer:

There are seven main classes of nutrients that the body needs. These are carbohydrates, proteins, fats, vitamins, minerals, fibre and water. It is important that everyone consumes these seven nutrients on a daily basis to help them build their bodies and maintain their health.

these are the 7 main classes of Nutrition that the body needs hope it will help you

When using a scientific calculator, what is the the correct order of buttons to
press to enter the number 3.5 x 1015?
O A. [EE] [1] [5] [3] [] [5]
B. [1] [5] [3] [5] [EE]
C. [3] [.] [5] [EE] [1] [5]
O D. [1] [5] [3] [] [5] [EE]
SUBMIT

Answers

It’s D because it had been multiple times the amount

what is a structure on a hawk that allows it to survive in its environment and how

Answers

Answer:

Hawks have many adaptations that enable them to survive in high places.

Explanation:

They have hollow bones that gives them buoyancy for flight.

They have good eyesight for hunting prey.

They have feathers to keep them warm during cold weathers. The feathers also add to their ability of flight.

They have claws or talons for attacking prey. They have sharp beaks for tearing into the flesh of their prey.

Other Questions
Part A3.75 mol of LiCl in 3.36 L of solutionExpress the molarity in moles per liter to three significant figures Which of the following statements is false?A. A rectangle is a parallelogram.B. A rhombus is a parallelogram.C. The height of a trapezoid is the distance between its bases.D. Given quadrilateral ABCD, AB and CD are adjacent A campus deli serves 101 customers over its busy lunch period from 11:30 am to 1:30 pm. A quick count of the number of customers waiting in line and being served by the sandwich makers shows that an average of 18 customers are in process at any point in time. What is the average amount of time (in minute) that a customer spends in process? Ill give u 20 points Which of the following statements is the most correct?a. A borrower's long-term debt typically has a higher interest rate than its short-term debt.b. Debt that is infrequently traded (less liquid) typically has a lower interest rate than similar but highly traded debt.c. Variable (floating) rate debt is more prevalent when long-term borrowing rates are low.d. Variable (floating) rate debt should never be used by healthcare providers because it is too risky.e. Fixed interest rate debt is more prevalent when long-term borrowing rates are high. how do you feel about the looting that took place in SA which of the following would a be a producer Below is budgeted production and sales information for Best Dog Collar Company for the month of December: Product CCC Product DDD Estimated beginning inventory 30,000 units 18,000 units Desired ending inventory 32,000 units 15,000 units Region I, anticipated sales 320,000 units 500,000 units Region II, anticipated sales 190,000 units 130,000 units The unit selling price for product CCC is $5 and for product DDD is $12. Budgeted sales for the month are: a. $9,692,000 b. $8,680,000 c. $10,110,,000 d. $9,010,000 You own a portfolio equally invested in a risk-free asset and two stocks. If one of the stocks has a beta of 1.62 and the total portfolio is exactly as risky as the market, what must the beta be for the other stock in your portfolio please help me with this Dylan has a coworker who is always showing up late and then not finishing his work on time. It's frustrating the other members of the team. What can he do that might help the situation? a) Complain about the coworker to other team members b) Ask his coworker if he understands his job responsibilities c) Tell his boss that the coworker is slacking off d) Complete his coworker's work for him need help with number 8 if you get 76% on a 50 question test how many questions did you get wrong? answer the question What's 0. (6) as a percentage? Craig and Cindy working together can mow the lawn in four hours working alone Cindy takes twice as long as Craig how long does it take Craig to mow the lawn alone Which best describes a difference between transcription and DNAreplication? Waterway Industries started the year with total assets of $314000 and total liabilities of $254000. During the year the business recorded $626000 in revenues, $327000 in expenses, and dividends of $61000. The net income reported by Waterway Industries for the year was Find the surface area of each figure. Round your answers to the nearest tenth, if necessary Asking yourself whether your mind is currently occupied by things that can take your concentration off the road is something you should do ______.