OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a dominant trait
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a recessive trait
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Either A or B
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None of the above
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Detailed explanation-1: -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-2: -Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.
Detailed explanation-3: -Finally, the genotype of an organism with two recessive alleles is called homozygous recessive.
Detailed explanation-4: -Blonde hair. Attached earlobes. Left-handedness. Black wool on sheep. Drooping ears on pigs. 08-Jul-2021