Biology MCQ on Genetics
Here you can get the best Biology MCQ on Genetics for the 12th class science students and also B.sc Biology students of all university. Also this MCQs is Best for NEET Exam Preparation.
Biology MCQ on Genetics
1. The resemblance tendency of offspring to its parent is known as
(a) Variation
(b) Heredity
(c) Resemblance
(d) Inheritance
Answer (b) Heredity
2. Father of Genetics is
(a) Morgan
(b) Mendel
(c) Watson
(d) Bateson
Answer (b) Mendel
3. Gene alternatively exists in the form of
(a) Alternate type
(b) Recessive character
(c) Dominant character
(d) Allele
Answer (d) Allele
4. The genotypic ratio is shown by a monohybrid cross is
(a) 1:2:1
(b) 3:1
(c) 2:1:1
(d) 9:3:3:1
Answer (a) 1:2:1
5.Regarding the “law of segregation”, the true one is
(a) Law of segregation is the law of purity of genes
(b) Alleles separate during gametogenesis
(c) Segregation of factors is due to the segregation of chromosomes during meiosis
(d) All of the above
Answer (d) All of the above
6. In an individual the Homozygosity and heterozygosity can be determined by
(a) Back cross
(b) Self-fertilization
(c) Test cross
(d) All of the above
Answer (c) Test cross
7. An exception to Mendel’s law is
(a) Independent assortment
(b) Linkage
(c) Dominance
(d) Purity of gametes
Answer (b) Linkage
8. Mendel use pee plant in his experiments because
(a) They were cheap
(b) They had contrasting characters
(c) They were available easily
(d) All of the above
Answer (b) They had contrasting characters
9. Which one of the following produces a phenotypic effect on mutation
(a) Muton
(b) Gene
(c) Recon
(d) Nucleic acid
Answer (a) Muton
10.Mendel’s findings were rediscovered by
(a) Correns
(b) De Vries
(c) Tschermark
(d) All
Answer (d) All
11. Alleles are
(a) Alternate forms of genes
(b) Linked genes
(c) Chromosomes that have crossed over
(d) Homologous chromosomes
Answer (a) Alternate forms of genes
12. The activity of one gene is suppressed by the activity of a non-allelic gene, the process is known as
(a) Pseudo-dominance
(b) Hypostasis
(c) Epistasis
(d) Incomplete dominance
Answer (c) Epistasis
13. Cystic fibrosis is
(a) Sex-linked recessive disorder
(b) Autosomal dominant disorder
(c) Autosomal recessive disorder
(d) Sex-linked dominant disorder
Answer (c) Autosomal recessive disorder
14. 9:7 ratio in the F2 generation indicates
(a) Incomplete dominance
(b) Co-dominance
(c) Epistasis
(d) Complementary interaction
Answer (c) Epistasis
15. The presence of small amount of lethal mutation in the population due to
(a) Positive selection
(b) Negative selection
(c) Frequency-dependent selection
(d) Mutation-selection balance
Answer (d) Mutation-selection balance
16.The human blood group ABO with alleles IA IB i,can occur phenotypes
(a) 2
(b) 3
(c) 4
(d) 1
Answer (c) 4
17. All the possible combinations of male and female gametes can be calculate by using
(a) Bateson Square
(b) Mendel Square
(c) Punnett Square
(d) Mendel’s Cube
Answer (c) Punnett Square
18. The pair of contrasting characters is
(a) Heterozygous
(b) Homozygous
(c) Codominant genes
(d) Allelomorphs
Answer (d) Allelomorphs
19. Which is not an outcome of Mendel’s Experiment?
(a) 3 tall 1 short plant
(b) 24 tall and 8 short plants
(c) 8 tall and 0 short plants
(d) 4 tall plants and 1 medium height plant.
Answer (d) 4 tall plants and 1 medium height plant.
20. The part of genetic material (DNA) that provide the information for one protein is
(a) Nucleus
(b) Chromosomes
(c) Trait
(d) Gene
Answer (d) Gene
21. Which of the following is not controlled by genes?
1. Weight of a person
2. Height of a person
(a) only 1
(b) only 2
(c) both 1 and 2
(d) sometimes 1 and sometimes 2
Answer (b) only 2
22. What is the probability that the male progeny will be a boy?
(a) 50%
(b) 56%
(c) 47.43%
(d) It varies
Answer (a) 50%
23. Who have a perfect pair of sex chromosomes?
(a) Girls only
(b) Boys only
(c) Both girls and boys
(d) It depends on many other factors
Answer (a) Girls only
24. With whom you can associate theory of evolution?
(a) Charles Darwin
(b) Mendel
(c) Stanley miller
(d) Harold Urey
Answer (a) Charles Darwin
25. Which of the following can be called a characteristic?
(a) Plants can photosynthesis
(b) We have 2 eyes
(c) Mango tree is multicellular
(d) All of these
Answer (d) All of these
26. Homologous organ have
(a) Same structure, same function
(b) Different structure, different function
(c) Same structure, different function
(d) different structure, same function
Answer (c) Same structure, different function
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