Forelimbs of different mammals sharing one bone plan are:
AHomosporous
BHomologous
CHomozygous
DHomogenous
Answer & Solution
Correct answer: B. Homologous
1. Humerus, radius, ulna, carpals, metacarpals and phalanges recur across mammals.
2. The same structure developed along different directions for different needs.
3. This is divergent evolution and these structures are homologous.
_Source: NCERT Class 12 Biology, Ch 7 'Evolution'_
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