Two Drosophila with genotypes AABBCC and aabbcc are crossed to produce a heterozygous offspring, AaBbCc (the gene order is unknown). This AaBbCc Drosophila is crossed with an aabbcc Drosophila, resulting in the offspring below: Number: Phenotype: 600 ABC and abc 200 AbC and aBc 150 ABc and abC 50 Abc and aBC a. Which phenotype represents the double crossovers

Answers

Answer 1

Answer:

The double recombinant individuals are less frequent ---> Abc and aBC

Explanation:

We can know if genes are linked, by looking at the progeny distribution. In a tri-hybrid cross, If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, meaning that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.

We can recognize the parental gametes because their phenotypes are the most frequent in the descendants, while the double recombinants are the less frequent. Finally, the simple recombinant gametes are the ones with intermediate phenotypes frequencies.  

In the present example, the phenotypic ratio shows different proportions than the expected ones if they were not linked.

We can recognize the parental gametes in the descendants because their phenotypes are the most frequent,

ABC and abc   600    

while the double recombinants are less frequent.

Abc and aBC  50  

And simple recombinant gametes produced by the cross, which frequencies are intermediate.  

AbC and aBc 200 ABc and abC 150

a. Which phenotype represents the double crossovers

The double recombinants are less frequent ---> Abc and aBC

 


Related Questions

Can buoyancy act between bodies in contact or not in contact??

Answers

Answer:

Buoyancy is a force. It is an contact force. But why? Because it is a force that acts between two objects, opposite a body force.

True or false, transport proteins are used when things are too big to pass through the cell membrane.

Answers

Answer:

True

Explanation:

If a red blood cell has a diameter of 8 mm and a student shows it with a diameter of 40 mm in a drawing, what is the magnification of the drawing?
O X5
O X 5000
X0.0002
O X0.2

Answers

The answer is O X 5000
I hope I helped

The type of eating disorder characterized by episodes of bingeing and purging is
anorexia nervosa.
ОА.
ОВ. .
bulimia nervosa.
oc. compulsive eating disorder.
D. binge-eating disorder

Answers

Answer:

The answer is Bulimia Nervosa

The type of eating disorder characterized by episodes of bingeing and purging is bulimia nervosa.

What is eating disorder?

Eating disorder means overeating of food which changes the lifestyle.

What is characterized?

Characterized means describing the nature.

What is episodes?

Episodes means events which occur in parts or in a sequence.

What is bingeing?

Bingeing is the controlled eating.

What is purging?

Purging is the method of vomiting.

What is bulimia nervosa?

Bulimia nervosa is an eating disorder.

Hence the correct option is (B).

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is photosynthesis a carbon sink?

Answers

Technically, yes

The main natural carbon sinks are plants, the ocean and soil. Plants grab carbon dioxide from the atmosphere to use in photosynthesis

Answer:

yes it does sink

Explanation:

What is the set of major stages than an organism goes through during its life called?

Answers

Answer:

the answer is A. life cycle

Explanation:

I took the quiz and it was right.

Describe the modification of FGF5 pre-mRNA that leads to the production of both the FGF5-L and FGF5-S proteins.

Answers

Answer:

Splicing of exons and exclusion of introns

-mRNA that is transcribed from DNA usually has large regions of genetic code that just do not code for anything. This is a pretty conserved phenomenon among eukaryotes, to have meaningless sequences of DNA (introns) separating the meaningful sequences of DNA (exons). Introns must be spliced out of mRNA so that its translation leads to a functional protein.

Explanation:

Which of the following processes
describes a cell taking up liquids from its
external environment?
A. endocytosis
B. exocytosis
C. phagocytosis
D. pinocytosis

Answers

Answer:

D

Explanation:

The correct Answer is C Phagocytosis

Why is DNA locked in the nucleus of the cell?​

Answers

Answer:

Inside the nucleus lies the blueprint that dictates everything a cell will do and all of the products it will make. This information is stored within DNA. The nucleus sends “commands” to the cell via molecular messengers that translate the information from DNA.

Explanation:

Answer:

In organisms called eukaryotes, DNA is found inside a special area of the cell called the nucleus. Because the cell is very small, and because organisms have many DNA molecules per cell, each DNA molecule must be tightly packaged. ... Researchers refer to DNA found in the cell's nucleus as nuclear DNA.

Explain how stem cell therapy helped Lucy break down deoxyadenosine

Answers

Answer:

It helped her fight off the stop protein, eventually helping her create more amino acids.

The stem cell therapy helped lucy break down deoxyadenosine as it helped her fight off the stop protein, eventually helping her create more amino acids.

What is amino acid?

Amino acid has the organic compound containing both an amino[tex](-NH2)[/tex] and a carboxylic acid [tex](-COOH)[/tex] functional group. The component of amino acid not contained in starch is that amino acids contain nitrogen but not starch.

On the other hand, starch has a carbohydrate molecule made up of monomers called monosaccharides. The monosaccharide is a long chain of carbon, hydrogen and oxygen atoms. This suggests that the major structural difference between amino acids and starch has that amino acids contain nitrogen but not starch.

There are several types of protein such as structural protein, transport proteins, antibodies, contractile proteins, hormonal proteins, and enzymes.

Therefore, The stem cell therapy helped lucy break down deoxyadenosine as it helped her fight off the stop protein, eventually helping her create more amino acids.

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help me out with these please
:):)

Answers

Answer: i would say b for the first one!

2nd pic: i would say c!

3rd pic: b or c!

Explanation:

omg this is what i think they are! sorry if its wrong!

Answer:

1st: b

2nd: c

3rd: b

I hope this helped!~ Have a great day~

~Keiji❤

Please remember to eat, you are valid and someone loves you~!

How did Mendel prevent flowers from self pollinating in his experiments

Answers

he removed the anthers from the flowers of some of the plants in his experiment. then he pollinated them by hand

All organisms must regulate_____ by turning genes on and off different cells at different times. In prokaryotic cells, related genes may be organized into_____, which can be turned on and off as a single unit. Eukaryotes have more complex modes of control, including the packing of chromosomes,____(which can produces several mRNAs from a single gene), and the control of translation. An understanding of gene regulation mechanisms has led to several interesting and important applications. For example, the loss of gene regulation can result in cancer, or out-of-control cell growth. And___can produce new live individuals, while___can produce potentially therapeutic stem cells.

Answers

Answer:

All organisms must regulate gene expression by turning genes on and off different cells at different times. In prokaryotic cells, related genes may be organized into operons , which can be turned on and off as a single unit. Eukaryotes have more complex modes of control, including the packing of chromosomes, RNA slicing (which can produces several mRNAs from a single gene), and the control of translation.

An understanding of gene regulation mechanisms has led to several interesting and important applications. For example, the loss of gene regulation can result in cancer, or out-of-control cell growth. And reproductive cloning can produce new live individuals, while therapeutic cloning can produce potentially therapeutic stem cells.

What are some ways that stars can be different?

Answers

Answer:

hello

Explanation:

the star is the far from earth they are big as the not look from the earth .they look twinkel because of atomphere refraction which make the wavelengh of star into the increasing and decreasing wave when increase wave come to our eyes it look bright and when decrease it look dim while plant can not do

Answer:Their brightness is one of the 3 reasons on how you can tell them apart Their brightness is a factor of how much energy they put out–known as luminosity an also how far away they are from earth .Color can also  fluctuate from star to star because Not all stars are the same temperature!Some are more cool and some are warmer!Hot stars appear white or blue, rather with cooler stars appear to have orange or red hues.We would normally think a orange or red would mean hot but no in this case!

What are stars made up of?

Stars are made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. All  the dots of light we see in the sky are all light-years from Earth!

Solid or gas?

Stars are The first state is a solid and it is the coldest state of matter.

Are stars alive?!

No silly stars are not alive !Their “birth and death.” It's a convenient, if fanciful, way of describing the ultimately ill-fated relationship between matter and energy that is a star.

Though consumed by millions of people, mushrooms are related to which infectious agent? A. bacteria B. fungi C. parasites D. viruses























Answers

B. fungi becaus thats just how it is

1. Which of the following has the smallest effect on the rate of photosynthesis?


A. Light intensity

B. Temperature

C. Oxygen concentration

D. Carbon Dioxide



2. The tiny mouth wide openings in leaves where gases move in and out is called ?

A. Stroma

B. Stromata

C. Sweat Pore

D. Mesophyll

Answers

Answer:

D: Carbon Dioxide

B: Stromata

A track and field coach is trying to decide what beverage is the best pre-training beverage for athletes to drink before a daily training session. The coach has chosen three beverages: a soda, a Gatorade, and water for the athletes to drink before training. The coach will then collect data on their performance during the period of time while training.
Afterward, the coach will track the performance of the athletes over an eight week period to see how their performance has changed.


What is the best Hypothesis for the experiment above? Explain why that is the best Hypothesis.

Answers

Answer:

The correct answer is - "which beverage would help athletes the best if he takes it before a daily training session".

Explanation:

The coach is trying to decide which beverage is going to help best for the athletes before their training session. He tried soda, water, and Gatorade and compare the data he gets after his experiment.

According to his experiment, he wanted to find the best beverage that will help athletes best. For this, the best hypothesis would be "which beverage would help athletes the best if he takes it before a daily training session", as it provides the real idea of the experiment.

_______metamorphism is when metamorphism occurs near magma._______metamorphism usually results from plates colliding. ______metamorphism creates the most metamorphic rock.​

Answers

Answer:

ejejrjttjtn

Explanation:

jzjsmsmmdmtmtfmdkdsd

What will happen if you keep increasing the temperature of a liquid?

Question 6 options:

It will solidify (turn into a solid)


It will transpire


It will boil and become a gas


It will remain a liquid

Answers

Answer:

It will boil and become a gas

Explanation:

Answer:

I'm pretty sure it will boil and become a gas

Explanation:

Help please with 4 super easy

Answers

Answer:

A Air pressure

Explanation:

Hope this helps have a great day

DNA is wrapped together to form structures called what?


-Chloroplasts
-Chloroplhyll
-Chromosomes

Answers

Answer:

Chromosomes

Explanation:

Chlorophyll and chloroplasts are both something plants create.

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. So chromosomes

Which statement is true about the products of cellular respiration?

They contain oxygen.
They contain glucose.
They become the products of photosynthesis.
They become the reactants of photosynthesis.

Answers

Answer:

They become the reactants of photosynthesis.

Explanation:

Answer:

They become the reactants of photosynthesis.

Explanation:

Give the other person brainliest

g Which on the list below is allowed in a Biohazardous waste ility of your PI or LSC to provide you with agent specific training in your lab: A. True B. False Work with microorganisms not known to cause disease in healthy adults is done at: A. Bio safety level 4 B. Bio safety level 3 C. Bio safety level 2 D. Bio safety level 1 Biohazardous waste boxes are provided by: A. Discounted pricing by Sourcing B. Work order by Facilities C. Custodial staff or EHS D. None of the above It is ok to use fuming chemicals in the biosafety cabinet because they are filtered and the air is cleaned before leaving the building: A. True B. False Before beginning work inside a Biological Safety Cabinet do all the following except: A. Disinfect the inside surface of the cabinet B. Turn on blower and let cabinet run for 15 minutes prior to work commencing C. Fill the cabinet with equipment and obstruct air flow D. All of the above You self-transport out of the USA all research samples without documentation: A. True B. False

Answers

Answer:

True

False

Bio safety level 1

Custodial staff or EHS

True

All of above

True

Explanation:

Micro organisms are little organisms which are not seen by naked eyes. They can harm human and cause diseases in humans. The statement is true.

Is the kingdom monera single or multi celled

Answers

Answer:

kingdom monera is single celled

Kingdom monera is single-celled.

The location for the SI gene is 3q26.1. What does this information tell you?

Answers

The SI gene provides instructions for producing the enzyme sucrase-isomaltase

Annotation 3q26.1. indicates a specific localization of a gene on chromosome number 3.

The localization of a gene in a chromosome is indicated by a specific pattern of bands generated by different cytogenetic staining techniques.

The first number/letter used in this code indicates the chromosome (in this case, 3 indicates chromosome number 3).

The letter q represents the long arm of the chromosome, whereas the shorter arm is referred to as p (in this case, 3q)

The following numbers represent the position of the gene on the chromosome arm, which is evidenced by specific patterns and staining techniques.

In conclusion, annotation 3q26.1. indicates a specific localization of a gene on a chromosome.

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The table below Anton Leeuwenhoek devised a primitive microscope to observe a sample of his tooth scrapings. How did this help contribute to cell theory?

It helped to show that cells cannot function independently.
It helped to show that some bacteria can swim like fish.
It helped to show that some bacteria are just one cell.
It helped to show that cells can be created from thin air. shows the average wind speeds of four hurricanes in Florida.

Answers

Answer:

The correct answer is - option C.

Explanation:

Anton Leeuwenhoek observed the presence of organisms in his tooth scratch or scrapings under the primitive microscope made by himself. At that time there was no knowledge about the bacteria and he named these small creatures as animalcules. These animalcules were bacteria actually.

These creatures were single-cell organisms and able to perform the function as an entity and postulate that bacteria is a single which is a fundamental unit of function and structure of all living organisms.

Where does biology become a person?

Answers

Answer:

What do you mean i'll help you but you need to be  more specific

Explanation:

Biology, simply defined, is the study of living organisms and the processes that make like possible.

Hopes this helps you your welcome

What occurs at step 3 in the diagram?
O The restriction enzymes cut the isolated DNA into fragments.
The gene of interest is inserted into an expression cassette.
The recombinant DNA is inserted into the host cell nucleus via a vector.
O The expression cassette is inserted into a plasmid for cloning.

Answers

Answer:

A

Explanation:

The restriction enzymes cut the isolated DNA into fragments

Answer:

its B on edge

Explanation:

Red blood cells are........white blood cells.

1)more numerous than

2)rounder than

3)less numerous than

4)older than


Answer and I will give you brainiliest

Answers

Answer:

Red blood cells are rounder than white blood cells.

Explanation:

ei hope you liked my answer

pls mark me brainlist

25. Type A blood and Type B blood are dominant to type O blood, but codominant to one another. What would
the blood type of a person who inherited a B allele one parent, and an O allele from the other be?
a. Type A
с. Type AB
b. Type B
d. Type o

Answers

Answer:

C.

The offspring of the two parents would inherit type B blood.

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