Q.1
Plant Genetic Resources- ICAR JRF/SRF 2024 (Q.26)
MCQ (Single Correct)
The gene "M' has 10 alleles, viz. My to Myo. How many genotypes are possible for the gene M with various allelic combinations?
  • Formula for Number of Diploid Genotypes with Multiple Alleles:
$$\text{Total Genotypes} = \frac{n(n + 1)}{2}$$
  • Calculation for $n = 10$ alleles ($M_1$ to $M_{10}$):
$$\text{Total Genotypes} = \frac{10(10 + 1)}{2} = \frac{10 \times 11}{2} = 55$$
  • Breakdown: 10 homozygous genotypes ($M_i M_i$) and $\frac{10 \times 9}{2} = 45$ heterozygous genotypes ($M_i M_j$). (Correct answer: Option 1)
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