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How does the inhertiance of sex-linked traits through meiosis relate to genetics?

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happy99 | Student, College Freshman | (Level 1) Salutatorian

Posted August 16, 2013 at 7:39 PM via web

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How does the inhertiance of sex-linked traits through meiosis relate to genetics?

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jerichorayel | College Teacher | (Level 1) Senior Educator

Posted August 19, 2013 at 9:24 AM (Answer #1)

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Meiosis is a type of cell division where the daughter cells to be formed is not similar to their mother cell in terms of genetic contents. Generally, this type of cell division happens to sex cells of eukaryotic organisms. This process starts with a diploid cell with two copies of each chromosomes coming from the mother and father. This diploid cell undergoes Meiosis to produce haploid daughter cells. 

What it the connection with genetics? Remember that to form an individual, for example, a human, we need a sperm and an egg cell uniting to form a zygote. The zygote contains a gene from its mother and one from the father. Having said that, there are traits that can be inherited by the forming organisms which are evident from the parents. 

There are traits that are controlled by the genes located in the sex chromosomes of an organism. For example, if a certain gene is found only on the X chromosome and not the Y chromosome, this can be called as sex-linked trait. The inheritance of a certain trait in this case is dependent also to the gender of the individual produced. 

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