Fast-developing preimplantation embryo progeny from heterogametic females in mammals.
Zygote
; 9(4): 289-92, 2001 Nov.
Article
em En
| MEDLINE
| ID: mdl-11771894
ABSTRACT
Karyotyping and cell number estimates in preimplantation embryos from heterogametic (XY*) and homogametic (XX) females of the field mouse Akodon azarae were studied to determine whether XX-XY-XY* differences exist in the rate of preimplantation development. At the morula stage, XY embryos from heterogametic mothers had twice the mean number of cells compared with XX embryos. However, this difference in cell numbers was not seen between XX and XY embryos from homogametic mothers. In this case, mean cell numbers were similar despite embryos being XX or XY. Furthermore, the mean cell number for XX and XY morulae from homogametic females was comparable to that for XX embryos from heterogametic females. It is concluded that XY* embryos (which will develop into heterogametic females) show an accelerated rate of preimplantation development.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cromossomos Sexuais
/
Blastocisto
/
Processos de Determinação Sexual
Limite:
Animals
Idioma:
En
Revista:
Zygote
Assunto da revista:
EMBRIOLOGIA
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Argentina