Neet Solved Paper 2013 Question 31
Question: Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as
Options:
A) genetic flow
B) genetic drift
C) random mating
D) genetic load
Show Answer
Answer:
Correct Answer: B
Solution:
- Genetic drift is a random change in allele frequencies over the generations. It is brought by chance alone. Gene flow or gene migration is the physical movement of alleles into and out of a population. The existence within the population of disadvantages alleles in heterozygous genotypes is known as genetic code.
