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What Is Monohybrid Cross?

A heterozygou...

Question

A heterozygous round seeded pea plant is crossed with wrinkled seeded pea plant. How many plants produces intermediate sized starch grain out of 2000 progenies obtained?

A

1000

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B

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C

1500

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D

750

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Solution

The correct option is A 1000
The starch synthesis in pea plants is controlled by a single gene which has two alleles B and b.
BB (homozygote) seeds were round whereas, bb was wrinkled.
The ratio obtained is 1 (long grain): 2 (intermediate grain): 1 (small grain), therefore, out of 2000 progenies obtained 1000 progenies have intermediate size starch grain.
So, the correct answer is '1000'.

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