1. Genotype is
A. Genetic composition of many organisms.
B. Genetic composition of plastids.
C. Genetic composition of germ cells.
D. Genetic composition of an individual.
Answer : Option D
2. Mendelism is genetics of
3. Which technique is used by Mendel for hybridization ?
4. Phenotypic ratio 3:1 proves
A. Dominance
B. Segregation
C. Crossing over
D. Independent Assortment
Answer : Option B
5. What is the ratio of homozygous plants for both dominant characters in F2 of a Dilybrid cross ?
6. Which of the following is significance of dominance ?
A. Organisms with dominant genes are more vital
B. Harmful mutations are not expressed due to dominant gene
C. Heterosis is due to dominant gene
D. All the above
Answer : Option B
7. From a single ear of corn, a farmer planted 200 kernels which produced 140 tall & 40 short plants. The genotypes of these off springs are most likely.
8. A useful process for determining whether an individual is homozygous or heterozygous is
A. cross - breeding
B. self fertilization
C. Back - crossing
D. Test cross
Answer : Option D
9. Heterozygous tall plants were crossed with dwarf plants what will be the ratio of dwarf plants in the following progency ?
10. Genetic recombinations occur through
A. Mitosis & fertilization
B. Mitosis & Meiosis
C. Meiosis & fertilization
D. None
Answer : Option C