Top 150+ Solved Heredity and Variation MCQ Questions Answer

From 121 to 128 of 128

Q. A test cross is carried out to AIPMT - 2012

a. determine the genotype of a plant at F1

b. Predict whether two traits are linked

c. assess the number of alleles of a gene

d. determine whether two species or varieties will breed successfully.

e. cessive

  • a. determine the genotype of a plant at F1

Q. A cross between AaBB X aaBB yields a genotypic ratio of AIPMT - 1990

a. 1 AaBB : 1 aaBB

b. I AaBB : 3aaBB

c. 3 AaBB : 1 aaBB

d. All AaBb

e. cessive

  • a. 1 AaBB : 1 aaBB

Q. Which of the following is non - heritable? AIPMT - 1995

a. Point mutation

b. Chromosomal mutation

c. Gene mutation

d. Somatic mutation

e. cessive

  • a. Point mutation

Q. Dihybrid cross proves the law of AIPMT - 1992

a. segregation

b. Purity of gametes

c. Dominance

d. Independent assortment

e. cessive

  • d. Independent assortment

Q. In a dihybrid cross between AABB and aabb the ratio of AABB, AABb, aaBb, aabb in F2 generation is

a. 9 : 3 : 3: 1

b. 1: 1: 1: 1

c. 1: 2: 2: 1

d. 1 : 1 : 2 : 2

e. cessive

  • c. 1: 2: 2: 1

Q. The allele which is unable to express its effect in the presence of another is called AIPMT - 1991

a. Co - dominant

b. Supplementary

c. Complementary

d. Recessive

e. cessive

  • d. Recessive
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