CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Rr
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RR
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rr
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all of them
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Detailed explanation-1: -A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr). The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape.
Detailed explanation-2: -There are dominant homozygotes (i.e. RR individuals) and recessive homozygotes (i.e. rr individuals). An individual who carries two different alleles (i.e. Rr) is a heterozygote (hetero = different).
Detailed explanation-3: -Individuals carrying two identical alleles (RR or rr) are known as homozygous. While individual organisms bearing different alleles (Rr) are known as heterozygous.
Detailed explanation-4: -Homozygous Recessive Examples If both parents have brown eyes but have a child with blue eyes, we have an example of a homozygous recessive phenotype. In this case, brown eyes are dominant. If brown eyes were recessive, all offspring would have brown eyes.
Detailed explanation-5: -So, the correct answer is ‘TT and tt’.