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

Solution

In a cross between tall pea plant and dwarf pea plant which gives the offspring population having equal ratios of tall and dwarf must have heterozygous tall plant. It is a case of test cross.

In this case,

There are 2 tall plants having genotype Tt.

And two dwarf plants having genotype tt.

Ratio of tall: dwarf = 2:2

Thus, the progeny would be 50% tall and 50% dwarf, that is tall and dwarf plants are in equal ratios.

Some More Questions From Principles of Inheritance and Variation Chapter

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Principles Of Inheritance And Variation

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

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