NEET 2016 Biology question

Which of the following most appropriately describes hemophilia?

(1)Recessive gene disorder
(2)X - linked recessive gene disorderCorrect
(3)Chromosomal disorder
(4)Dominant gene disorder

Answer: (2)

Solution

Hemophilia is caused by a recessive allele located on the X chromosome, so it is a sex-linked (X-linked) recessive disorder: it affects mainly males (XhY), while a female shows the disease only when homozygous (XhXh); heterozygous females are carriers. The defect is in a

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Question ID VK-091930