genetic disorders.pdf - Sex-linked disorders are passed down through families They’re carried by sex chromosomes represented by X and Y Sex

genetic disorders.pdf - Sex-linked disorders are passed...

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Sex-linked disorders are passed down through families. They’re carried by sex chromosomes, represented by X and Y. Sex chromosomes also decide your gender. If you have a mixture of XY sex chromosomes, you’ll be a male. If you have a mixture of XX chromosomes, you’ll be a female. Since men have XY sex chromosomes, if a recessive gene occurs on the X chromosome, they’ll likely get a sex-linked disorder. Despite still having the Y chromosome, they still might get get the disorder. This’ll happen because the Y chromosome doesn’t have as much genes as the X chromosome. Some examples of a sex-linked disorder is hemophilia, color blindness, and muscular dystrophy. This is what a sex-linked disorder is.
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Unformatted text preview: Selective breeding is to breed animals to mix their genes to make them ideal. The most prominent example of this are dogs. Many people breed dogs to make them look a certain way. Dogs didn’t start out that way, they were evolved from wolves because of the way we bred them. For example, to make smaller dogs, you were to breed small dogs with small dogs, resulting in some of the small breeds of dogs we have today. Another commonly used animal for selected breeding are cats. Some breeders breed cats so that people allergic to them could more easily tolerate them. They do this by breeding cats with less fur with each other. This is how selective breeding is used....
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