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Genetics, Heredity & Evolution
NEET Biology • 10 questions • Free on ExamBattle
Practice Questions
Q1
Mendel's law of segregation states that:
- A. Genes for different traits assort independently
- B. Alleles of a gene pair separate during gamete formation
- C. Dominant alleles always mask recessive ones
- D. Traits are determined by multiple genes
Q2
In a monohybrid cross between two heterozygous tall plants (Tt × Tt), the ratio of tall to dwarf plants is:
- A. 1:1
- B. 2:1
- C. 3:1
- D. 1:3
Q3
A person with blood group AB has which genotype?
- A. I^A I^A
- B. I^A I^B
- C. I^B I^B
- D. I^A i
Q4
According to the Hardy-Weinberg principle, allele frequencies in a population remain constant if:
- A. Natural selection is occurring
- B. The population is small with random mating
- C. Large population with random mating and no selection
- D. Mutations are occurring frequently
Q5
The structure of DNA was proposed by:
- A. Griffith and Avery
- B. Watson and Crick
- C. Mendel and Morgan
- D. Lamarck and Darwin
Q6
Sex-linked inheritance is associated with genes on:
- A. Autosomes
- B. Sex chromosomes (X or Y)
- C. Mitochondrial DNA only
- D. Cytoplasm
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