NEET Zoology - MCQ Practice Questions

In a X-linked trait, if the allele frequency of the recessive allele in males is 0.1, what is the allele frequency of the recessive allele in females at Hardy-Weinberg equilibrium?

A mutation changes a GC base pair to AT in a non-coding region of DNA. This mutation's evolutionary significance depends primarily on:

A new allele arises in a small island population of 100 individuals. The allele frequency is 0.02. Over the next 10 generations without selection, what is most likely to happen?

In a three-point testcross involving genes A, B, and C with map distances A-B = 10 map units and B-C = 20 map units, if coefficient of coincidence is 0.8, what is the interference value?

A researcher observes that in a population of snails, shell color is controlled by a single gene with two alleles (B and b). Yellow shells (BB) = 100, Brown shells (Bb) = 300, White shells (bb) = 600. Is this population in Hardy-Weinberg equilibrium?

Which of the following would NOT cause a change in allele frequencies in a population?

A species shows 5 pairs of chromosomes. During meiosis in an individual heterozygous for all 5 genes (AaBbCcDdEe), what is the maximum number of different gamete types that can be produced?

In a population affected by a recent bottleneck event, which is most likely to occur?

A researcher studying gene expression notices that identical twins show different phenotypes for a trait despite having identical genotypes. This is most likely due to:

In genomic imprinting, a disorder appears only when the mutant allele is inherited from the father but not the mother. This pattern suggests:

A couple has been trying to conceive for 2 years without success. The male has normal semen analysis. What could be the issue?

Which statutory body in India regulates Assisted Reproductive Technology (ART) services?

In the context of reproductive health, what does 'Comprehensive Sexuality Education' (CSE) aim to achieve?

Which of the following conditions is associated with anovulation?

What is the most common sexually transmitted infection (STI) affecting reproductive health in India as per 2024 data?

What is the 'window of implantation' in the endometrium?

A woman on long-term anticonvulsant therapy wishes to use oral contraceptives. What should be the recommended action?

A 28-year-old female reports irregular menstrual cycles with excessive bleeding. Laboratory tests show elevated FSH and normal prolactin levels. What could be the likely diagnosis?

A couple has been trying to conceive for 2 years without success. The male partner has normal semen analysis. What is the next appropriate investigation for the female partner?

During in vitro fertilization (IVF), what is the purpose of using GnRH agonists in the downregulation phase?