Correct option is D
What is the Law of Segregation?
Proposed by
Gregor Mendel, the
Law of Segregation is one of the
three fundamental laws of inheritance.
It states that
two alleles for a heritable trait
separate (segregate) during gamete formation, and
each gamete receives only one allele.
�� Explanation of Each Option:
✅ (a) Alleles separate from each other during gametogenesis
True. During
meiosis, paired alleles are segregated so that each
gamete receives only one allele for each gene.
✅ (b) The segregation of alleles is due to the segregation of chromosomes
True. Alleles are
located on chromosomes, and
homologous chromosomes segregate during
anaphase I of meiosis, which causes the
alleles to separate.
✅ (c) Law of segregation is the law of purity of gametes
True. Mendel called it the
“law of purity of gametes”, because each gamete carries only a
single allele without mixing or blending with the other.
�� Illustrative Example:
For a gene with alleles
T (tall) and
t (dwarf):
A plant with genotype
Tt will produce gametes with either
T or t,
not both.
This ensures
purity of gametes, as each gamete carries only one unaltered allele.