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प्रश्न
The recessive genes located on X chromosome in humans are always ______.
पर्याय
sub-lethal
expressed in males
expressed in females
lethal
MCQ
रिकाम्या जागा भरा
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उत्तर
The recessive genes located on X chromosome in humans are always expressed in males.
Explanation:
A male has only one X chromosome, so a recessive allele on it is expressed because the Y chromosome usually lacks a corresponding allele. Females generally need two copies for expression.
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