OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An organism carries both the dominant and recessive form of a trait. How will the trait be expressed by the organism?
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only the recessive trait will be expressed throughout the organism’s life
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only the dominant trait will be expressed throughout the organism’s life
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a combination of the dominant and recessive traits will be expressed by the organism
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the recessive trait will be expressed in childhood and the dominant trait will be expressed in adulthood
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Explanation:
Detailed explanation-1: -In such a scenario where both parents carry a dominant and recessive allele, there is a 75% chance the child will have brown eyes (BB or Bb) and a 25% chance he or she will have blue eyes (bb). 3 of the 4 scenarios modeled in the Punnett square show at least one B allele.
Detailed explanation-2: -Indeed, “codominance” is the specific term for a system in which an allele from each homozygote parent combines in the offspring, and the offspring simultaneously demonstrates both phenotypes.
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