NEET BIOLOGY

GENETICS AND EVOLUTION

GENETIC BASIS OF INHERITANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Traits controlled by genes on the X chromosome are called sex-linked traits. In what individuals are recessive sex-linked traits more commonly expressed?
A
females because they have two X chromosomes
B
males because they have only one X chromosome
C
females because they have no Y chromosome
D
males because they have a Y chromosome
Explanation: 

Detailed explanation-1: -In humans, the term often refers to traits or disorders influenced by genes on the X chromosome, as it contains many more genes than the smaller Y chromosome. Males, who have only a single copy of the X chromosome, are more likely to be affected by a sex-linked disorder than females, who have two copies.

Detailed explanation-2: -X-linked, as related to genetics, refers to characteristics or traits that are influenced by genes on the X chromosome.

Detailed explanation-3: -X-linked recessive inheritance is a way a genetic trait or condition can be passed down from parent to child through mutations (changes) in a gene on the X chromosome. In males (who only have one X chromosome), a mutation in the copy of the gene on the single X chromosome causes the condition.

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