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X-INACTIVATION


Produto Indisponível

Sinopse

High Quality Content by WIKIPEDIA articles! X-inactivation (also called lyonization) is a process by which one of the two copies of the X chromosome present in female mammals is inactivated. THe inactive X chromosome is silenced by packaging into transcriptionally inactive heterochromatin. X-inactivation occurs so that the female, with two X chromosomes, does not have twice as many X chromosome gene products as the male, which only possess a single copy of the X chromosome (see dosage compensation). THe choice of which X chromosome will be inactivated is random in placental mammals such as mice and humans, but once an X chromosome is inactivated it will remain inactive throughout the lifetime of the cell and its descendants in the organism. UNlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally derived X chromosome.

Detalhes do Produto

    • Ano:  2010
    • País de Produção: Germany
    • Código de Barras:  9786130488413
    • ISBN:  6130488416
    • Encadernação:  BROCHURA
    • Nº de Páginas:  100

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