Sex-linked traits genetics

An egg plus an X-containing sperm will make a female offspring, and an egg plus a Y-containing sperm will make a male offspring. Because, males only have one X chromosome, they have a much greater chance of having red-green colorblindness. 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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Homologous chromosomes have the same genes arranged in the same order.



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Sample Sex-linked Trait Problems.

Sex Linkage

For genes on autosomes, we all have two copies—one from each parent. These are sex-linked traits.

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July 15, Contact the Development Team http: If a gene is found only on the X chromosome and not the Y chromosome, it is said to be a sex-linked trait. That is, 'ash-red' is dominant to 'blue', which is dominant to 'brown'. The following problems have multiple choice answers.
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  1. July 15, Contact the Development Team http: Above Female pigeons inherit their color allele from their father.