The X chromosome has a lot of traits for things besides the traits we consider female. It carries traits forthings like the ability of your blood to clot correctly and the ability to see differences in the colors red andgreen. If you blood doesn’t clot correctly, it’s called Hemophilia. If you can’t see the difference betweenred and green, you are colorblind. Therefore, these are referred to as X-Linked or Sex-Linked Traits.Notice that those are on the X chromosome only. That means they are missing from the Y. In fact, the Y iscalled Y because it is physically missing a section at the end. This means the Y chromosome is missing genes that the X chromosome has. If you are XY, you only haveone copy of the gene, or one allele. Given what we just said above, can a XY parent pass a X-Linked Trait to his XY offspring?
The X chromosome has a lot of traits for things besides the traits we consider female. It carries traits for
things like the ability of your blood to clot correctly and the ability to see differences in the colors red and
green. If you blood doesn’t clot correctly, it’s called Hemophilia. If you can’t see the difference between
red and green, you are colorblind. Therefore, these are referred to as X-Linked or Sex-Linked Traits.
Notice that those are on the X chromosome only. That means they are missing from the Y. In fact, the Y is
called Y because it is physically missing a section at the end.
This means the Y chromosome is missing genes that the X chromosome has. If you are XY, you only have
one copy of the gene, or one allele.
Given what we just said above, can a XY parent pass a X-Linked Trait to his XY offspring?
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