NEET Zoology - MCQ Practice Questions

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?

In a population at Hardy-Weinberg equilibrium, if the frequency of recessive allele (q) = 0.3, what is the frequency of heterozygous individuals?

A tall plant (genotype unknown) is crossed with a dwarf plant. All offspring are tall. What is the most likely genotype of the tall parent?

Which of the following best represents anagenesis in evolution?

A person is heterozygous for cystic fibrosis (Ff). Their partner is homozygous normal (FF). What is the probability of having an affected child?

In Darwin's theory of natural selection, 'variation' is important because it:

A dihybrid cross (AaBb × AaBb) is performed. What is the probability of getting the recessive phenotype for both traits?

Antibiotic resistance in bacteria develops rapidly due to:

Which genetic concept explains why children of the same parents can have different traits despite inheriting genes from both?

A new species can be defined by reproductive isolation from other species. Which reproductive barrier is exemplified by lions and tigers producing sterile offspring (ligers)?

In human genetics, color blindness (red-green) is X-linked recessive. A color-blind woman has how many copies of the color-blindness allele?

Microevolution differs from macroevolution primarily in that microevolution:

A heterozygous red-eyed Drosophila female (XAXa) is crossed with a white-eyed male (XaY). What percentage of male offspring will have white eyes?

A point mutation in a gene's coding sequence results in UAA instead of CAA. This type of mutation is called:

In a test cross with a heterozygous individual (Aa), if 40% of offspring show the dominant phenotype, what might this indicate?

Which of the following represents the correct sequence of speciation in peripatric speciation?

A recessive genetic disorder appears in 1% of a population. What is the frequency of the recessive allele (q)?

Which mechanism of evolution is most likely responsible for the loss of eyes in blind cave fish?

In Drosophila, if the coefficient of inbreeding (F) increases, what is the expected change in heterozygosity?