A cross was performed between pea plants P1 (violet flower) and P2 (white flower). If obtained progeny showed ratio of 1 (violet) : 1 (white) , then determine the genotype of P1. 

(1) Homozygous recessive

(2) Heterozygous

(3) Homozygous dominant

(4) Can’t be determined

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Recessive allele of an enzyme coding gene may be responsible for the production of

(1) The normal/less efficient enzyme

(2) A non-functional enzyme

(3) No enzyme at all

(4) Any of the above.

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Genes which code for a pair of contrasting traits are known as

(1) Factors

(2) Alleles

(3) Linked genes

(4) Lethal genes

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ABO blood groups are controlled by which gene

(1) a

(2) I

(3) b

(4) All of the above

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Co-dominance refers to the condition where F1

(1) resembles the dominant parent

(2) is in-between the parents

(3) resembled the recessive parents

(4) resembles both the parents

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What does Blending inheritance refers to? 

(1) Mixed characters in an offspring

(2) Dominant character

(3) Recessive character

(4) Dominant & recessive character

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In human ABO blood grouping possible number of genotypes is

(1) 3

(2) 4

(3) 6

(4) 9

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What is the phenotypic and genotypic ratio of F2 generation in incomplete dominance? 

(1) 3:1 and 1:2:1

(2) 1:2:1 and 3:1

(3) 1:2:1

(4) 1:1:1

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Recessive character is expressed in

(1) F0

(2) F1

(3) F2

(4) Never expressed.

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Type of pollination in Pisumsativum is

(1) Cross pollination

(2) Self-pollination

(3) Bud pollination

(4) Both 2 and 3

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