Class 10 Science Biology Heredity and Evolution



If a heterozygous tall pea plant is self-pollinated, what will be the heterozygous: homozygous proportion of the progenies?
(a)
1:3
(b)
1:1
(c)
3:1
(d)
1:2
Correct answer: (b) 
Solution: Considering a heterozygous parent with T and t alleles is self-pollinated, we get two set of heterozygous progeny and two homozygous progeny. 

Homozygous TT, tt =2
Heterozygous Tt = 2

Ratio Heterozygous: Homozygous = 2:2 = 1:1

So the ratio between them is 1:1

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components of food
heredity and evolution
how do organisms reproduce?
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