1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natita [175]
3 years ago
11

Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered p

ea plant having smooth edges. If the purple-flowered plant is heterozygous for both traits, the expected ratio in the offspring is 1 purple-serrated:1 purple-smooth:1 white-serrated:1 white-smooth. Instead, you see 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth. What is the explanation of this ratio
Biology
1 answer:
Rom4ik [11]3 years ago
5 0

Answer:

genes for flower color and edge shape are linked. They do not assort independently.

Explanation:

<u>Available data:</u>

  • test cross between a purple-flowered pea plant having serrated leaves and a white-flowered pea plant having smooth edges.
  • serrated leaves → dominant trait
  • smooth edges → recessive trait
  • purple color → dominant trait
  • white color → recessive trait
  • F1: 4 purple-serrated:1 purple-smooth:1 white-serrated:4 white-smooth.

There are two genes involved in the cross. The expected ratios are 1:1:1:1 because we assume genes assort independently. However, we see a different phenotypic distribution. When phenotypic ratios differ from the expected ones, it means that genes are linked.

To know if two genes are linked in the same chromosome, we must observe the progeny distribution. If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1. But if instead of this distribution, we observe a different one, that is that phenotypes appear in different proportions, we can assume that genes are linked in the double heterozygote parent

 

You might be interested in
What does the body use to build maintain and repair cells?
denis-greek [22]

Proteins is used to build and repair cells.

Protein can be found in every living cell and it is very important building block in the body. Protein supply amino acids which were being used to create and repair cells, enzymes, red blood cells, antibodies and tissues. In the body, protein functions by maintaining fluid balance and transportation substances. Protein can be gotten from meat, dairy products, soyabeans, nuts, beans and certain grains.    However, protein from meat and other animal products are known as complete protein.  

7 0
3 years ago
Please answer !!!!! super stressed ​
4vir4ik [10]
If you were studying climate change in general. The answer would be the last one which is ecosystem because it’s the study of the environment
7 0
3 years ago
Read 2 more answers
Which of the following is TRUE about stem cells
postnew [5]

Answer:

I think it’s D

Explanation:

4 0
3 years ago
A. Humor
iogann1982 [59]

Answer:

1. b liver

2. a stapes

3. a pineal gland

4. b skin epidermis

5. tendons

plz mark it as brainliest

4 0
3 years ago
two parent butterflies with normal wings have offspring with altered wing shapes what most likely caused this change
Allisa [31]

Answer:

The Parents may have had heterozygous genotypes.

Explanation:

Normal wings could be the dominant allele that is expressed in the phenotype, and altered wings could be the recessive allele. If both parents had a heterozygous genotype, it is possible for the offspring to have a homzygous recessive genotype.

3 0
3 years ago
Other questions:
  • What happens to a stimulus after the body receives it?
    6·1 answer
  • 1 . An individual is a single living thing ? True or False ?
    5·1 answer
  • Which Scientists’ observations eventually led to the theory of continental drift
    12·1 answer
  • Help lolllllllll HAHAHHAHAHAHAHHAHAHAH
    11·1 answer
  • Polytene chromosomes of Drosophila salivary glands each consist of multiple identical DNA strands that are aligned in parallel s
    9·1 answer
  • WILL GIVE BRAINLIEST!!!! PLZ HELP ASAP!!!<br><br><br>IMAGE BELOW:
    10·1 answer
  • Just so everyone knows this is for science!
    5·1 answer
  • Need help right away!!
    5·1 answer
  • A virus is a nonliving thing,
    12·2 answers
  • The digestive process involves two main types of digestion. Identify each type and explain how each works to break down food. In
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!