Sequencing the mouse Y chromosome reveals convergent gene acquisition and amplification on both sex chromosomes.
Cell
; 159(4): 800-13, 2014 Nov 06.
Article
en En
| MEDLINE
| ID: mdl-25417157
ABSTRACT
We sequenced the MSY (male-specific region of the Y chromosome) of the C57BL/6J strain of the laboratory mouse Mus musculus. In contrast to theories that Y chromosomes are heterochromatic and gene poor, the mouse MSY is 99.9% euchromatic and contains about 700 protein-coding genes. Only 2% of the MSY derives from the ancestral autosomes that gave rise to the mammalian sex chromosomes. Instead, all but 45 of the MSY's genes belong to three acquired, massively amplified gene families that have no homologs on primate MSYs but do have acquired, amplified homologs on the mouse X chromosome. The complete mouse MSY sequence brings to light dramatic forces in sex chromosome evolution lineage-specific convergent acquisition and amplification of X-Y gene families, possibly fueled by antagonism between acquired X-Y homologs. The mouse MSY sequence presents opportunities for experimental studies of a sex-specific chromosome in its entirety, in a genetically tractable model organism.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cromosoma Y
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Análisis de Secuencia de ADN
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Cromosomas de los Mamíferos
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Evolución Biológica
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Ratones Endogámicos C57BL
Límite:
Animals
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Female
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Humans
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Male
Idioma:
En
Revista:
Cell
Año:
2014
Tipo del documento:
Article
País de afiliación:
Estados Unidos