However many alleles of a gene exist in a population, a diploid human individual can carry at most
Correct answer: B. two
- A. one
- B. two
- C. three
- D. four
Explanation
Each person inherits one allele from each parent, so only two can be present, one on each homologue. The ABO blood group has three alleles in the population, but any one person holds only two of them.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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