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erastovalidia [21]
3 years ago
9

en qué consiste la inactivación del cromosoma X, por qué ocurre y cómo este fenómeno explica que una hembra heterocigota no teng

a el fenotipo de color naranja.
Spanish
1 answer:
zimovet [89]3 years ago
5 0

Answer:

La inactivacion del cromosoma X consiste en que un cromosoma X se compacta y forma una estructura más pequeña quedando así uno de los cromosomas inactivo y de esta forma se procude una nueva estructura llamada "cuerpo de Barr". Una hembra heterocigota, cuyos alelos del gen del color del pelo presentes en el cromosoma X fueran "negro y naranja" quedarían inactivos los alelos del color.

Explanation:

We could say that there are three stages in the process of inactivation of the X chromosome:

- 1st stage: the X chromosome count.

- 2nd stage: the selection of the X chromosome that will be inactivated.

- 3rd stage: the inactivation of the chromosome itself.

For example, If a cat is heterozygous for the black and orange alleles of the hair colour gene found in the X chromosome, then It will inactivate each of the two chromosomes. The result will be a cat covered with black hair and some orange hair. This is so because not all genes remain inactive during the process so If there are some orange alleles the cat will have two different colours. However, If orange alleles remain inactive, the cat will be black.

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