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Question

Three Mark Questions :
During a monohybrid cross involving a tall pea plant with dwarf pea plant, the offspring populations were tall and dwarf in equal ratio. Work out a cross to show how it is possible.

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Solution

This is possible only if the tall plant has a heterozygous genotype of Tt and the dwarf plant will have a homozygous genotype of tt. Under such conditions, the resulting progenies will have either the T or t allele from one parent and the t allele from the other. This will result in either a genotype of Tt (tall) or tt (dwarf) and both of them will be 50%. The cross can be shown as in the image.
1108269_988203_ans_bb53eead61644994b2a0f43f997c1221.png

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