A recessive allele expresses itself in the phenotype
Correct answer: A. only when present in the homozygous condition
- A. only when present in the homozygous condition
- B. in both the heterozygous and homozygous conditions
- C. only in males
- D. only in the F1 generation
Explanation
In a heterozygote the dominant allele masks the recessive one, so the recessive trait appears only when both alleles are recessive. This hiding is why traits can skip a generation and reappear in grandchildren.
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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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