MCQ
Darwinian theory was unable to explain
- AThe significance of minute variations
- BPresence of vestigial or useless organs
- CThe presence of over specialized organs
- ✓All of the above
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$(i)$ Queen Elizabeth shows a number of haemophilic descendents.
$(ii)$ Variation in blood group prevalences due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds, female is heterozygous.
$a \quad\;b \quad\;c\quad\; d$