Question

If 3${}^n$ is the theoretically possible number of different genotypes (when n = the number of chromosome pairs with each carrying one pair of heterozygous alleles), the different genotypes produced by pea plant is

• A. 3${}^{10}$
• B. 3${}^{12}$
• C. 3${}^{14}$
• D. 3${}^7$

Answer 1

Answer: (D)

3${}^7$

According to the question,
Possible number of genotypes = 3${}^n$
where, n = the number of chromosome pairs with each carrying one pair of heterozygous alleles.
The number of homologous chromosome pair in pea plant is 7.
Hence, possible number of genotypes for pea plant is 3${}^7$.

Thus, the correct answer is option D.