Now, let\'s say genes A and B are so close together on the same chromosome that

ID: 145617 • Letter: N

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Now, let's say genes A and B are so close together on the same chromosome that no crossing over occurs between them. An individual is heterozygous at both genes and the alleles are arranged as shown:

What gametes will be produced?

(Note: These are called "parentals" because they have the same arrangement of alleles as the parents have.)

1) 1 AB : 1 Ab : 1 aB : 1 ab A B A B a b 1-1 Note: Alleles A and B are located on the AB/ab same chromosome in this individual: a and b are on the other homolog. a b

Explanation / Answer

As genes A and B are so closed together then their will be no recombination. So, AB will always be together.

So, gametes will be AB and ab.

So, correct answer is option B that is 1AB : 1ab.

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Now, let\'s say genes A and B are so close together on the same chromosome that

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