QQuestion
Determine which of the following genotypes is homozygous for both the loci —
(a) BbRr
(b) BBRr
(c) BbRR
(d) bbrr
✓Answer
(d) bbrr
Explanation
Homozygous means having two identical alleles at a locus. The genotype bbrr is homozygous recessive for both loci. Other genotypes have at least one heterozygous locus (different alleles).
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