How many different gamete types can an individual with the genotype aabbccdd produce during meiosis?

• A. 4
• B. 1
• C. 8
• D. 2

Answer: (B)

Verified step by step guidance

1. Understand that gametes are formed through meiosis, where alleles segregate independently according to Mendel's law of independent assortment.
2. Identify the genotype given: aabbccdd. Each pair of alleles represents a gene locus, and each locus has two alleles.
3. Determine the number of heterozygous loci. In this genotype, all loci (aa, bb, cc, dd) are homozygous, meaning there is no variation at any locus.
4. Recall that the number of different gamete types is calculated as 2^n, where n is the number of heterozygous loci. Since there are no heterozygous loci (n=0), the calculation becomes 2^0.
5. Conclude that 2^0 equals 1, indicating that only one type of gamete can be produced from this genotype.