A man can inherit his X-chromosome from his | vedclass

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(A) In humans,a male has $XY$ sex chromosomes. He inherits his $Y$-chromosome from his father and his $X$-chromosome from his mother. The mother,in tu

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Maternal grandmother or maternal grandfather

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(A) In humans,a male has $XY$ sex chromosomes. He inherits his $Y$-chromosome from his father and his $X$-chromosome from his mother. The mother,in turn,inherits one $X$-chromosome from her father (maternal grandfather) and one $X$-chromosome from her mother (maternal grandmother). Therefore,the $X$-chromosome that a man receives from his mother could have originally come from either his maternal grandmother or his maternal grandfather. Thus,the correct option is $A$.

$A$ man can inherit his $X$-chromosome from his

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