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6.Evolution
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Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism ?
A
Genetic drift
B
Recombination
C
Transduction
D
Chromosomal aberrations
(NEET-2015)
Solution
(b) : The genetic variations exist due to reshuffling of genes caused by recombinations or by mutations. The recombinations are produced by the routine reshuffling of genes during independent assortment of chromosomes, reciprocal crossing of genes during crossing over and random fertilization of gametes.
Standard 12
Biology
Similar Questions
In a certain population, the frequency of three genotypes is as follows
| Genotypes : | $BB$ | $Bb$ | $bb$ |
| frequency : | $22\%$ | $62\%$ | $16\%$ |
What is the likely frequency of $B$ and $b$ alleles ?
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