PATHOLOGY MCQ
GENETICS AND DISEASE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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dominant allele
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codominance
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recessive allele
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Punnett Square
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Detailed explanation-1: -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-2: -A recessive allele is hidden whenever the dominant allele is present.
Detailed explanation-3: -The recessive allele is hidden and not expressed when a dominant allele is present. The recessive allele is only expressed when an organism has two recessive alleles.
Detailed explanation-4: -A capital letter represents the dominant form of a gene (allele), and a lowercase letter is the abbreviation for the recessive form of the gene (allele).
Detailed explanation-5: -Uppercase letters represent dominant alleles and lowercase letters indicate recessive alleles.