OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a gene is found only on the X chromosome and not the Y chromosome, it is said to be ____
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an x-linked trait
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polygenic trait
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codominant trait
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incomplete dominance trait
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Explanation:
Detailed explanation-1: -When a gene is present on the X chromosome, but not on the Y chromosome, it is said to be X-linked. X-linked genes have different inheritance patterns than genes on non-sex chromosomes (autosomes). That’s because these genes are present in different copy numbers in males and females.
Detailed explanation-2: -X-linked recessive inheritance refers to genetic conditions associated with mutations in genes on the X chromosome. A male carrying such a mutation will be affected, because he carries only one X chromosome.
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