MCQ on MENDELISM

MCQ on MENDELISM MCQ on MENDELISM MCQ on MENDELISM

1.Mendel formulated the law of purity of gametes on the basis of :-
(1) Dihybrid cross
(2) Monohybrid cross
(3) Back cross
(4) Test cross

2. During breeding the removal of anthers from a flower is called :-
(1) Anthesis
(2) Pollination
(3) Emasculation
(4) Vasectomy

3. In monohybrid cross what is the ratio of homozygous dominant and homozygous recessive individuals in F₂–generation :-
(1) 1:2:1
(2) 2:1 / 1:2
(3) 3:1 / 1:3
(4) 1:1

4. A cross between AaBB X aa BB yields a genotypic ratio of :-
(1) 1 AaBB: 1 aaBB
(2) 1 AaBB : 3 aaBB
(3) 3AaBB : 1 aa BB
(4) All AaBb

5. On which plant Mendel had carried out his investigations :-
(1) Garden - pea
(2) Wild pea
(3) Cow-pea
(4) Pigeon pea

6. What is the genotypic and phenotypic ratio of monohybrid test cross :-
(1) 1:1
(2) 1:2
(3) 3:1
(4) 1:2:1

7. The cross between recessive to it's hybrid or it's F₁ plant is called :-
(1) Back cross
(2) Test cross
(3) Monohybrid cross
(4) Dihybrid cross

8. How many gametes are produced in F1 generation of a trihybrid :-
(1) 3
(2) 4
(3) 8
(4) 16

9. How many types & in what ratio the gametes are produced by a dihybrid heterozygous :-
(1) 4 types in the ratio of 9:3:3:1
(2) 2 types in the ratio of 3:1
(3) 3 types in the ratio of 1:2:1
(4) 4 types in the ratio of 1:1:1:1

10. Dihybrid cross proves the law of :-
(1) Segregation
(2) Purity of gametes
(3) Dominance
(4) Independent assortment

11. In a cross between a pure tall plant with green pod & a pure short plant with yellow pod. How many
short plants are produced in F2 generation out of 16 :-
(1) 1
(2) 3
(3) 4
(4) 9

12. Mendelian ratio 9:3:3:1 is due to :-
(1) Law of segregation
(2) Law of purity of gametes
(3) Law of independent assortment
(4) Law of unit characters

13. Which genotype represents a true dihybrid condition
(1) tt rr
(2) Tt rr
(3) Tt Rr
(4) TT Rr

14. AABbCc genotype forms how many types of gametes :-
(1) 4
(2) 8
(3) 2
(4) 6

15. In a dihybrid cross between AABB and aabb the ratio of AABB, AABb, aaBb, aabb in F2 generation
is :-
(1) 9:3:3:1
(2) 1:1:1:1
(3) 1:2:2:1
(4) 1:1:2:2

16. In Mendel's experiments, color of seed, nature of flower, position of flower, color of pod, height of
stem, are called :-
(1) Alleles
(2) Genotype
(3) Phenotype
(4) All of the above

17. If 120 Plants are produced on crossing pure red and pure white flowered pea plants, than the ratio
of offsprings will be :- (Red is dominant)
(1) 90 Red : 30 White
(2) 30 Red : 90 White
(3) 60 Red : 60 White
(4) All Red

18. Who rediscovered the results of Mendel's experiments :-
(1) DeVries, Tschemark, Correns
(2) DeVries, Tschemark, Morgan
(3) Tschemark, Morgan, Correns
(4) Tschemark, Bateson, Punnet

19. Crossing AABB & aabb, the probability of AaBb would be in F2 generation :-
(1) 1/16
(2) 2/16
(3) 8/16
(4) 4/16

20. An individual with two identical members of a pair of genetic factors is called :-
(1) Hemizygous
(2) Heterozygous
(3) Nonhomologous
(4) Homozygous