Question No:1

Which of the following disorders is not hereditary?

[A] Haemophilia
[B] Cataract
[C] Sickle-cell anaemia
[D] Colour blindness



Question No:2

A pleiotropic gene is one which

[A] Affects one character
[B] Affects more than one characters
[C] (a) and (b) both
[D] None of these



Question No:3

Phenyketonuria is a genetic disorder of

[A] Trisomic condition
[B] Monosomic condition
[C] Autosomal dominant gene
[D] Autosomal recessive gene



Question No:4

Which of the following is not X-linked recessive?

[A] Haemophilia-A
[B] Colour blindness
[C] BETA-Thalasemia
[D] G-6 PD deficiency



Question No:5

Monosomy and trisomy can be represented as

[A] 2n+1,2n + 3
[B] 2n-1,2n-2
[C] 2n, 2n+1
[D] 2n-1,2n+1



Question No:6

Which result proved that there was no blending in Mendelian Cross?

[A] Filial₁ progeny of monohybrid cross
[B] Filial₂ progeny of dihybrid cross
[C] Filial₁ progeny of dihybrid cross
[D] All of the above



Question No:7

F₂-progeny of Mendelian monohybrid cross between Tall and Dwarf plant made up of

[A] Tall plant, identical to their parental type
[B] Dwarf plant, identical to their parental type
[C] Plant with intermediate light were produced
[D] Both (a) and (b)



Question No:8

Select incorrect statement

[A] Capital latter is used to denote dominant trait
[B] Small latter is used to denote recessive trait
[C] True breeding variety is represented by similar allele pair of gene
[D] Alleles are completely similar forms of the same genes



Question No:9

Punnett was

[A] Italian botanist
[B] British geneticist
[C] American geneticist
[D] Austrian geneticist



Question No:10

What genotype ratio of Mendelian monhybrid cross?

[A] 3:1
[B] 1:2:1
[C] 1:1
[D] 3:2



Question No:11

Mendel found that the F₁ always resembled either one of the parents and that the trait of the other parent was not seen in them. This is due to

[A] Segregation
[B] Dominance
[C] Partial dominance
[D] Unit factor



Question No:12

In monohybrid cross, proportion of 3:1 explains

[A] Dominance
[B] Segregation
[C] Both (a) and (b)
[D] Unit factor



Question No:13

In Morgan’s experiment, what will be the percentage of recombination in case of body colour and eye colour?

[A] 37.20%
[B] 1.30%
[C] 98.70%
[D] 37.2



Question No:14

Which of the following was/were applied first time to problems in biology during Mendel’s investigations into inheritance?

[A] Statistical analysis
[B] Mathematical logic
[C] Computational
[D] Both (a) and (b)



Question No:15

Mendel proposed how many general rules to consolidate his understanding of inheritance in monohybrid cross?

[A] One
[B] Two
[C] Three
[D] None of the rules, he proposed laws/principles