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29 November, 18:46

In humans, the allele for hemophilia, h, is recessive. Which phenotype is displayed in an individual with the genotype XHY

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  1. 29 November, 19:21
    0
    The correct answer would be, phenotype: normal hemophilic male.

    Explanation:

    Hemophilia is a recessive X-linked disease or disorder. It is exhibited in males if he has X-chromosome with recessive allele which is Xh as males carry only one copy of X-link and one Y - chromosome. However, in females, hemophilia only exhibits if both X - chromosomes are recessive as they carry two copies of X-chromosome. Female with one copy of the recessive allele is said to be the carrier of the disorder.

    An individual with XHY genotype suggests that this individual is a male because having one copy of each X-chromosome and Y-chromosome. This individual has the dominant allele for hemophilia so the individual will be normal.

    Thus, phenotype: normal hemophilic male.
  2. 29 November, 21:21
    0
    If the individual has the genotype XHY? that tells you that the individual is male and he does not carry the disease allele for hemophilia (h) so this male will not have hemophilia (because he has the dominant non disease H allele).

    XHY - no hemophilia male

    XhY - hemophilia Male
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