Human Sex Linked Traits

A woman has two X chromosomes; a man has one X chromosome and one Y chromosome. These genes are considered sex-linked because their expression and inheritance patterns differ between males and females. All males possessing an X-linked recessive mutation will be affected, since males have only a single X-chromosome and therefore have only one copy of X-linked genes. Egg Concrete Blonde Live sperm join to make a zygote, which develops into a new offspring. In mammalsthe female is homogametic, with two X chromosomes XXwhile the male is the heterogametic sexwith one X and one Y chromosome XY. And males make sperm, which can have an X or a Y.



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Human Sex Linked Traits
Human Sex Linked Traits

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During recombination, homologous chromosomes pair up and exchange stretches of DNA. The closer together the linked genes are, the less likely it is that a recombination event will happen between them. Genes code for proteins, and proteins make traits. During meiosis, the number of chromosomes is reduced by half, so that each gamete gets just one of each autosome and one sex chromosome.
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