Question

Observe the flow-chart of a monohybrid cross in a clitoria plant and write the answers
for A, B, C, D:

Answer 1

A=Bb and Bb
B=Bb. Bb
C=Blue flower: white flower=3:1
D=BB:Bb:bb=1:2:1

Answer 2

Flow-chart of a mono hybrid cross in a clitoria plant

1. When two parent, one with genotype "BB" is crossed with other another genotype "bb", it leads to the production of progeny with allele "Bb" in F1 generation. Thus A is "Bb"
2. When the F1 generation gametes are self crossed with parent "B" and "b", it leads to the formation of "BB", "Bb", "Bb" and "bb". Thus B is "Bb".
3. The phenotype ratio of the given cross is 3:1, which is nothing but 3 blue flowers and 1 white flower. Thus C is 3:1.
4. The genotypic ratio is 1:2:1, which means 1 "BB", 2 "Bb", and 1 "bb". Thus D is 1:2:1.

Learn more about mono hybrid cross

What is mono hybrid cross? Explain it with help of checker board give the genotypic and phenotypic ratio of the same

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In a mono hybrid cross what will be percentage of heterozygous offspring in F4 – generation -

(1) 25%

(2) 50%

(3) 12.5%

(4) 6.25%

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