NEET Zoology - MCQ Practice Questions

According to the Hardy-Weinberg equation (p² + 2pq + q² = 1), what do p and q represent?

A population of 1000 individuals has 640 individuals with dominant phenotype and 360 with recessive phenotype. The frequency of recessive allele (q) is:

X-linked recessive inheritance patterns typically show:

Haemophilia A is inherited as:

A woman who is a carrier for color blindness (XᴮXᵇ) marries a normal man (XᴮY). What percentage of their sons will be color blind?

Which type of mutation has no effect on the protein produced?

Darwin's concept of natural selection is best explained as:

The phenomenon where an organism develops different phenotypes from the same genotype under different environmental conditions is called:

Which of the following is evidence for evolution?

In Drosophila, white eye color (w) is X-linked recessive. A white-eyed female (XwXw) is crossed with a red-eyed male (XW Y). What percentage of offspring will have white eyes?

Which of the following represents a point mutation that does NOT change the amino acid sequence of a protein?

According to Hardy-Weinberg equilibrium, if the frequency of allele 'A' is 0.6 and allele 'a' is 0.4 in a population, what will be the frequency of heterozygotes (Aa)?

A homozygous round seed pea plant (RR) is crossed with homozygous wrinkled seed plant (rr). The F1 seeds are planted and self-pollinated. In the F2 generation, what fraction of round seed plants will be homozygous?

Which mechanism of evolution is responsible for random changes in allele frequencies in small populations?

The peppered moth experiment by Kettlewell during industrial revolution demonstrated which evolutionary concept?

A red-eyed Drosophila female (XW) is crossed with a white-eyed male (XwY). What will be the phenotypes of F1 offspring?

The concept of 'survival of the fittest' in evolution primarily refers to:

A testcross of a tall plant with unknown genotype produces 50% tall and 50% dwarf offspring. The tall parent's genotype must be:

In ABO blood group genetics, if both parents have AB blood group, what blood groups are IMPOSSIBLE in their children?

A gene has four alleles in a population. If three alleles have frequencies of 0.4, 0.3, and 0.2, what is the frequency of the fourth allele?