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Question

(B) $1$. Klinefelter's syndrome is characterized by the presence of an additional copy of the $X$ chromosome $(47, XXY)$,so option $A$ is incorrect.$2

Vedclass · Accepted Answer

Turner's syndrome - one $X$ sex chromosome present.

Vedclass · Answer

(B) $1$. Klinefelter's syndrome is characterized by the presence of an additional copy of the $X$ chromosome $(47, XXY)$,so option $A$ is incorrect.$2$. Turner's syndrome is caused by the absence of one $X$ chromosome,resulting in a $45, X0$ genotype,meaning only one $X$ sex chromosome is present. Thus,option $B$ is correct.$3$. Down's syndrome is caused by trisomy of the $21^{st}$ chromosome,not monosomy. Thus,option $C$ is incorrect.$4$. Beta thalassemia is caused by mutations in the $HBB$ gene located on chromosome $11$,not the $5^{th}$ pair. Thus,option $D$ is incorrect.

Similar Questions

If a person has $45$ chromosomes with $XO$ chromosomal abnormality,then it is considered as which disorder?

Which of the following are characteristics of the disorder described by Langdon Down?

Down's syndrome is caused by the trisomy of which chromosome pair?

In Turner's syndrome:

In Klinefelter's syndrome,what is generally the set of sex chromosomes?

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