Top 150+ Solved Heredity and Variation MCQ Questions Answer
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
Q. Represented below is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern?
a. Phenyl ketonuria
b. Sickle Cellanaemia
c. Haemophilia
d. Thalassemia
e. cessive
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
Q. Which of the following is non - heritable? AIPMT - 1995
a. Point mutation
b. Chromosomal mutation
c. Gene mutation
d. Somatic mutation
e. cessive
Q. Dihybrid cross proves the law of AIPMT - 1992
a. segregation
b. Purity of gametes
c. Dominance
d. Independent assortment
e. cessive
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
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