GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1:2:1
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3:1
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1:1
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1:1:1:1
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Detailed explanation-1: -Why did all of the F1 offspring of Mendel’s classic pea cross always look like one of the two parental varieties? One allele was dominant.
Detailed explanation-2: -Mendel first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only round-yellow seeds were produced in the F1 generation.
Detailed explanation-3: -The cross between heterozygous yellow seeded plant and green seeded plant will produce 50% yellow seeded plants and 50% green seeded plants. Hence, option A is the correct answer.
Detailed explanation-4: -What will be the results when this F1 is crossed with round and yellow seeded parents? Hence, the progeny produced will be all round yellow seeded pea plants.
Detailed explanation-5: -Thus, the ratio of yellow and green seeded plants will be 1:1. Q. In pea plants, yellow seeds are dominant to green.