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GENETICS MCQ FOR NEET
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1. When the phenotypic and genotypic ratio resemble in the F2 generation, it is an example of:
(a) Qualitative inheritance
(b) Dihybrid cross
(c) Cytoplasmic inheritance
(d) Incomplete dominance
2. One of the following ratios represents a test cross:
(a) 3:1
(b) 9:7
(c) 1:2:1
(d) 1:1:1:1
3. When two individuals are similar in external appearance but different in their genetic make up, they are called as:
(a) Phenotype
(b) Genotype
(c) Homongous
(d) Heterozygous
4. The plants are considered to be true breeding when:
(a) All the plants of the parental generation resemble each other.
(b) The progeny occupies less space.
(c) The progeny may show genetic- variability which may finally be utilized for evolving a better type.
(d) The progeny is free from disease.
5. A cross of the F1 generation with the recessive parents is known as:
(a) Back cross
(b) Test cross
(c) Hybrid cross
(d) Double cross
6. Gregor Johann Mendel is famous for propounding:
(a) The theory of inheritance of acquired characters
(b) The theory of mutation
(c) The law of heredity
(d) The cell theory
7. Mendel was lucky in choosing pea plant for his experiment for explaining the laws of inheritance because:
(a) Pea plants belong to the family leguminosae.
(b) They show red coloured flowers.
(c) They have rotind seeds which have large amount of proteins.
(d) The seven characters he selected were on four different chromosome.
8. Which of the following form represents a pair of contrasting characters?
(a) Alleles
(b) Phenotype
(c) Homozygous
(d) Heterozygous
9. A cross between a heterozygous and a homozygous recessive individual gives a ratio of:
(a) 2 : 1
(b) 3 : 1
(c) 1 : 2 : 1
(d) 1 :1
10. Inheritance of colour of kernel in wheat is an example of:
(a) Monogenic inheritance
(b) Polygenic inheritance
(c) Pleiotropie inheritance
(d) None of the above
ANSWERS:-
1- d
2- d
3- d
4- a
5- b
6- c
7- d
8- a
9- d
10-b
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