Top 150+ Solved Heredity and Variation MCQ Questions Answer
Q. 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.
e. cessive
Q. Which technique is used by Mendel for hybridization ?
a. Emasculation
b. Bagging
c. Protoplast fusion
d. Both A & B
e. cessive
Q. Phenotypic ratio 3:1 proves
a. Dominance
b. Segregation
c. Crossing over
d. Independent Assortment
e. cessive
Q. What is the ratio of homozygous plants for both dominant characters in F2 of a Dilybrid cross ?
a. 1/16
b. 3/16
c. 4/16
d. 9/16
e. cessive
Q. 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
e. cessive
Q. 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.
a. TT ,tt
b. TT , Tt , tt
c. TT ,Tt
d. Tt ,tt
e. cessive
Q. 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
e. cessive
Q. Heterozygous tall plants were crossed with dwarf plants what will be the ratio of dwarf plants in the following progency ?
a. 50%
b. 25 %
c. 75%
d. 100%
e. cessive
Q. Genetic recombinations occur through
a. Mitosis & fertilization
b. Mitosis & Meiosis
c. Meiosis & fertilization
d. None
e. cessive
Q. Which of the following is the unit of inheritance ?
a. Phenotype
b. Genotype
c. Gene
d. Genome
e. cessive
Q. Allele is the
a. Alternate trait of gene pair
b. Total number of genes for a trait
c. Total number of chromosomes
d. Total number of chromosomes of a haploid set.
e. cessive
Q. Genotype - Phenotype concept was first produced by
a. Bateson
b. Johannsen
c. Sutton&Boveri
d. Punnet
e. cessive