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

Every cell has 3 billion DNA base pairs. How does this long strand of DNA fit into a nucleus?​

Answers

Answer: These DNA though is long, it is small. it would be half-squished in the nucleus. Because it is half squished, that is why they can be infected by viruses.

This answer not be correct, by the book i read said so.

please help! I will give brainly! x

Why was 1990 an important year regarding air quality?

The United States took first steps to keep the air clean.
The United States created the Environmental Protection Agency.
Modifications and improvements were made to the Clean Air Act.
Funding was established under the Clean Air Act to study air pollution.

Answers

Answer:

C. Modifications and improvements were made to the clean Air Act.

Explanation:

Btw I answered first

How is a warm front different from a cold front?

Warm fronts cause snow flurries in the winter, while cold fronts cause several days of rainy weather.
Warm fronts cause rapid changes in weather, while cold fronts cause several days of cloudy weather.
Warm fronts cause several days of cloudy weather, while cold fronts cause heavy snow in the winter.
Warm fronts cause thunderstorms in the summer, while cold fronts cause rain when the air is humid.

Answers

Answer:C

Explanation:

Answer:

Warm fronts cause several days of cloudy weather, while cold fronts cause heavy snow in the winter.

Explanation:

Why do multicellular cells communicate together?

1. To maintain strength and shape

2. To be more organized

3. To maintain homeostasis

Answers

Answer:

I think 3 because I had the same thing but eah

pretty sure it’s 1 but yeah

in which of the glands are ducts located between lobules.

Answers

Answer:

Interlobular -- Located between lobules, within the thin connective tissue septa that separate lobules. All interlobular ducts are excretory.

Hannah and Becca are fraternal twins. They are both athletic. Hannah is a swimmer, and Becca is a runner. Which sister would have denser bones?

Answers

Hannah that is what I would answer....

According to the question, Hannah would have denser bones because her bone would get heavier due to water absorption through epithelial cells.

What is Bone density?

Bone density may be characterized as a type of measurement that significantly involves the accumulation certain amount of minerals contained in a certain volume of bone. This measurement is generally used to find out and treat serious bone loss, called osteoporosis.

When an individual is practicing in a swimming pool constantly for a longer period of time, it is observed that his/her bone density must be increased as compared to those who are running or performing other types of athletic activities.

Therefore, according to the question, Hannah would have denser bones because her bone would get heavier due to water absorption through epithelial cells.

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The images represent sexual and asexual reproduction. These methods of reproduction vary in terms of the genetic composition of offspring. In __________ the offspring are genetically identical to the parents.

Answers

Answer:

in asexual reproduction the offsprings are genetically identical to the parents.

Explanation:

Answer:

Images B and C

Explanation:

 

.

Which of the following statements about the process of science is accurate?
A. Science does not use evidence and data collected to advance our understanding of natural and supernatural phenomena.
B. Science attempts to solve a problem by evaluating the plausibility of only one solution without considering other possible explanations.
C. Science is a systematic method of procedures designed to answer questions by evaluating evidence.
D. Science can answer all questions regarding the human experience and personal values.

Answers

Answer:

C

Explanation:

The correct answer would be that science is a systematic method of procedures designed to answer questions by evaluating evidence.

Science is generally defined as man's way of obtaining knowledge about his natural environment through the evaluation of evidence available to him. Science follows a laydown procedure to obtain evidence through data collection, analyze such, and arrive at reasonable conclusions. This laydown procedure is referred to as the scientific method.

Hence, that science does not use evidence and data collected to advance the understanding of natural and supernatural phenomena is an antithesis to what science represents.

Science only arrive at conclusion after evaluating all available evidence associated with a phenomenon. That it attempts to solve a problem by evaluating the plausibility of only one solution without considering other possible explanations is, therefore, not true.

Science continuously seeks knowledge in order to understand the natural world. Hence, while science has been able to answer several questions about man and his natural world, several questions still have their answers pending. That science can answer all questions regarding the human experience and personal values is, therefore, far from being true.

The only accurate option that describes science is C.

The best description of science is that science is a systematic method of procedures designed to answer questions by evaluating evidence.

What is science?

Science is defined as the process by which man obtain knowledge about his natural environment through observation and critical evaluation of facts and evidences in order to arrive at a conclusion.

The scientific method is as follows;

ObservationAsking questionsmaking hypothesisconducting experimentsanalysis and statement of laws.

Therefore, science is a systematic method of procedures designed to answer questions by evaluating evidence.

Learn more about the scientific method at: https://brainly.com/question/17216882

Answer 8-9 please.................. And 13

Answers

Answer:

1. A

2. C

3. C

Second page:

1. A

2. C

3. D

Explanation:

Helppp me!!!!! ASAP

Answers

ff= slow
MM=strong
Ii= intelligent
I’m doing a giveaway and show how to get rubux gift cards !

PLEASE HELP !
this is any multicellular living thing that obtains energy from sunlight or makes it own food

= ??

Answers

Answer:

Autotroph

Explanation:

i’m pretty sure it’s autotrophs

The inactive state of a seed or other plant part when conditions are not right for growth is ___.
1. Phototropism
2. Dormacy
3. Gravitropism

Answers

Gravitropism,because if it is Phototropism that means it is the reaction of a plant towards the light, while Gravitropism is the failure of a plant to go towards the light making the plant grow in another direction(it’s a sad plant kinda)

Which of the following was NOT one of Darwin's
arguments for his theory of natural selection?

A) There is variation among individuals in a
population

B) Much variation is heritable

C) Populations possess an enormous reproductive
potential

D) Resources are abundant

E) Population sizes remain stable

Answers

Answer:

option D) resources are abundant.

Explanation:

according to Darwin resources are small. individuals of a population compete for these resources.

The building blocks of DNA are like alphabet letters, because they:
A. Are each associated with a particular sound
B. Can be used in a variety of languages
C. Each have an uppercase and a lowercase form
D. Spell out different instructions depending on their order

Answers

Answer: The answer is D.

Explanation: It makes the most sense and explains how both the aplhebet and DNA have simrialities.

The building blocks of DNA are like alphabet letters because they spell out different instructions depending on their order. Thus, the correct option for this question is D.

What are the building blocks of DNA?

The building blocks of DNA are known as nucleotides. These nucleotides are made up of three parts. They are as follows:

A phosphate group.A pentose sugar.Nitrogenous base.

These nucleotides are arranged by one another with the help of a linkage known as phosphodiester linkage. Nitrogenous base in nucleic acids like DNA includes Adenine, Thymine, Cytosine, and Guanine. In the DNA, they are represented as A, T, C, and G. Due to this, the building blocks of DNA are like alphabet letters.

Therefore, the building blocks of DNA are like alphabet letters because they spell out different instructions depending on their order. Thus, the correct option for this question is D.

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Expanded volcanic rock used as a soil amendment is known as _____.
A- Perlite
B- Vermiculite
C- Peat
D- Sand

Answers

Answer:

A or B

Explanation

I think it is A or B hope it helps ;-;

b. The muscle attachment that is usually relatively fixed is called its​

Answers

Answer:

Sud I k igkckcjc sorry I don't know

Answer:

Origin

Explanation:

In cystic fibrosis, an important protein destined for the plasma membrane never makes it beyond the Golgi complex. This protein is necessary for Na and Cl- transport and is critical for maintaining mucous secretions of the appropriate consistency. Devise an explanation for why this may occur.

Answers

Answer:

The correct answer is - Golgi apparatus marks or tags on this protein as incorrect or dysfunctional tags which then prevents it from transported to the membrane.

Explanation:

The role of the Golgi apparatus is to process and package the proteins produced and come from ER and transfer them to the plasma membrane in order to transfer them to their target sites.

The Golgi apparatus marks or tags the proteins that are incorrect or dysfunctional, in order to prevent these proteins from transporting to the plasma membrane and harm the membrane. In CF, the case is similar as the Golgi apparatus tags these proteins as incorrect or dysfunctional.

At the end of anaphase 1 (meiosis), how many
chromosomes are on each side?

Answers

there are 46 chromosomes or 23 pairs of homologous chromosomes (:

Please look at the picture and answer ASAP

Answers

Not sure but hope you find it!!!
it is c but i’m just guessing lol xd

What type of cell is not differentiated

Answers

Progenitor Cell does not differentiate. It’s an UNdifferentiate cell.
Answer: progenitor cell :) hope this helps

Please answer fast!
What are the two arteries where you can check your
pulse?
A. brachial and dorsalis
B. facial and femoral
C. carotid and radial
D. temporal and auricular

Answers

carotid and raidal !

Answer:

c

Explanation:

Because the Carotid is your wrist and Radial is your neck

Why does a pea plant with the genotype Rr have round seeds, not wrinkled ones.

Answers

Answer:

Wrinkled peas need to have genotype rr, since the wrinkled trait (r) is recessive

R is the dominant allele ( codes for round seeds). The dominant allele will be “dominant” or expressed over the recessive allele which is r or wrinkled. So with Rr the dominant allele/ trait masks the recessive trait

What is poisonous enough to kill 100,000 turkeys? That’s the question asked by scientists who studied a mass die-off of turkeys in Great Britain. It turned out that all the turkeys had eaten peanuts from Brazil. A fungus was growing on the peanuts. The fungus produced a dangerous poison called aflatoxin. Aflatoxins cause stomach pain, lung failure, cancer, and death in people and animals.

Farmers make a great effort to prevent fungi from growing on their stored crops. In a pile of grain or nuts, fungi have plenty of food and living space. The best way for farmers to prevent fungi from growing is to make sure there is not enough for fungi to survive and grow.

Answers

Answer:

what am I supposed to answer?

in the blank circle, draw the moon phases we would see if we were on Earth in the diagram and then write the name of that moon phase on the blank line

Answers

Answer:yThe Moon has phases because it orbits Earth, which causes the portion we see illuminated to change. The Moon takes 27.3 days to orbit Earth, but the lunar phase cycle (from new Moon to new Moon) is 29.5 days. ... As the Sun sets, the Moon rises with the side that faces Earth fully exposed to sunlight (5).

Explanation:

please help find RNA code from DNA code

Answers

Answer:

her rna code would be.... AUG GGC UAC

Explanation:

i took this class last year and i always has an A+ in that class

Volcanoes are part of which sphere of Earth?

a. biosphere
b. geosphere
c. hydrosphere
d. atmosphere

Answers

Its d) Atmosphere .....))

Bruce Wallace (1963) established a laboratory population in which the recessive allele lt was at a frequency of 0.5. He propagated the population for 10 generations, and determined the frequency of lt each generation.

a. True
b. False

Answers

Answer:

a. True

Explanation:

Bruce Wallace was a professor emeritus of genetics who performed many population studies. He worked in 1958 at the University of Cornell as a professor of genetics. In 1963, he performed a population study wherein the recessive allele It was at a frequency of 0.5. The population was propagated for 10 generations and the frequency of It for each generation was determined.

The result of this study showed that lt/lt died without reproducing, whereas, individuals with genotype +/+ were normal.

In a biological reaction involving an enzyme, what does the active site of an enzyme bind to?
A. the inactive site of another enzyme


B. the catalyst


C. the active site of another enzyme


D. the substrate

Answers

Answer:substrate

Explanation: The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst.

Answer:

The Substrate.

Explanation:

The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst.

https://courses.lumenlearning.com/boundless-biology/chapter/enzymes/#:~:text=The%20enzyme%20's%20active%20site,its%20action%20as%20a%20catalyst.

Plus I took the test on k12.

Jon lives on the coast of California, near the Pacific Ocean. A cold current flows past the coast. What is the most likely effect of the cold water current on the climate where Jon lives?


A: The climate would be less humid than nearby inland areas.


B: The cold water current would keep summer weather cooler than nearby inland areas.


C: The climate would have weather that changes more throughout the year than nearby inland areas.


D: The cold water current would cause the area to have warmer weather year-round than nearby inland areas..

Please help.

Answers

Answer:

a

Explanation:

Answer:

i think c?

Explanation:

hope this helped

Moving your limb through a full 360 degree circle is called what*
Rotation
Circumduction
Flexion
Extension

Answers

Answer:

rotation

Explanation:

circle is 360 degrees

Moving your limb through a full 360 degree circle is called rotation of your limb.

What is rotation?

Rotation is the process of moving an object or a body from a central position, through the circumference of that position.

This type of motion is usually 360 degrees movement because it involves a complete circle or turn.

Thus, moving your limb through a full 360 degree circle is called rotation of your limb.

Learn more about rotation here: https://brainly.com/question/26249005

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