Which statement BEST defines Mendel's law of segregation?
AAllele pairs separate at gamete formation, one per gamete
BDominant traits always show in the F₁ generation strongly
CIndependent assortment of two traits across chromosomes
DAll offspring resemble the dominant parent fully
Answer & Solution
Correct answer: A. Allele pairs separate at gamete formation, one per gamete
1. Mendel's law of segregation deals with gamete formation in heterozygous parents.
2. The two alleles of a gene exist together in the parent (e.g. Tt).
3. During meiosis, the alleles separate so each gamete carries only one.
4. Fertilisation later restores the pair in the offspring.
5. So the law states that allele pairs segregate during gamete formation.
6. Option A describes dominance; option C is independent assortment.
_Source: NCERT Class 10 Science Ch 9 'Heredity' (learncbse.in extract)_
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