You believe that there has been a reciprocal translocation between genes A and B in a...
You believe that there has been a reciprocal translocation between genes A and B in a species of plant that you are studying. The genes are known to be on different chromosomes in a closely related species. Which of the data below would support that a reciprocal translocation had happened?
| A. |
The recombination frequency decreases |
|
| B. |
The two genes show a recombination frequency of 50% |
|
| C. |
The two genes show linkage |
|
| D. |
The recombination frequency of linked genes drops to zero |
|
| E. |
The two genes show a recombination frequency of 0% |
Homework Answers
Answer (C) The two genes shows linkage
Reciprocal translocation is a chromosome abnormality caused by exchange of parts between non-homologous chromosomes.
Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase.
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Background Information for Question 1:
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Question 1 A)
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Background Information for Question 1:
.
Question 1 A)
If a translocation heterozygote mates with someone who is not
deaf and has normal heart function, what is the likelihood of an
offspring being deaf and suffering from early heart failure? Show
all your work. (Assume no crossing over between D and H in a
translocation heterozygote.) (2 marks)
.
Question 1 B)
The youngest brother (deaf, no evidence of heart failure yet)
has children with a woman who is not...
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