OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an offspring is said to be homozygous recessive, which of the following could be its genotype?
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tt
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Tt
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TT
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None of these
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Explanation:
Detailed explanation-1: -An example of a homozygous recessive genotype would be tt, where the lower case t’s represent the recessive trait. Homozygous means the same and genotype means the gene type.
Detailed explanation-2: -Recessive alleles only show their effect if the individual has two copies of the allele (also known as being homozygous?). For example, the allele for blue eyes is recessive, therefore to have blue eyes you need to have two copies of the ‘blue eye’ allele.
Detailed explanation-3: -An individual who is homozygous recessive will have the “aa” genotype, two recessive “a” alleles.
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