Question

How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE?

(a) 4 (b) 8 (c) 16 (d) 32 (e) none of the above

Answer 1

An individual with the genotype AaBbCCDdEE can produce 8 unique gametes through independent assortment, considering the independently assorting genes Aa, Bb, and Dd.

Step-by-step explanation:

The student has asked how many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE. To answer this, we must first consider the alleles that can segregate independently. The genotype AaBbCCDdEE has three genes where independent assortment can occur: Aa, Bb, and Dd. CC and EE do not affect the calculation since they are homozygous and only provide one type of allele. The number of unique gametes is calculated by raising the number of possible allele combinations for a single gene to the power of the number of genes that can segregate independently. In this case, each gene with different alleles (Aa, Bb, and Dd) can produce 2 different gametes (A or a, B or b, D or d). Since we have three such genes, the number of unique gametes is 2^3, which equals 8. Therefore, the correct answer is (b) 8.

Answer 2

The correct answer will be option-B

Step-by-step explanation:

The number of different possible gametes produced in this dihybrid genotype during independent assortment depends on the heterozygous pairs at a single locus.

During independent assortment, each heterozygous pair of alleles separate forming 2 gametes whereas homozygous pair of alleles form only 1 type of gamete.

In the given question with genotype AaBbCCDdEE contains:

1. Three pairs of heterozygous pairs- Aa, Bb and Dd

2. Two homozygous pairs- CC and EE

So, during independent assortment, the gametes formed will be-

1. Aa will segregate to form- A and gametes (2 gametes)

2. Bb will segregate to form- B and B gametes (2 gametes)

3. Dd will segregate to form- D and d gametes (2 gametes)

4. CC will segregate to form- C only ( 1 gamete)

5. EE will segregate to form- E only ( 1 gamete)

Thus, 8 different types of gametes are produced.