Anent the genomics of spermatogenesis in Drosophila melanogaster.
PLoS One
; 8(2): e55915, 2013.
Article
em En
| MEDLINE
| ID: mdl-23409089
ABSTRACT
An appreciable fraction of the Drosophila melanogaster genome is dedicated to male fertility. One approach to characterizing this subset of the genome is through the study of male-sterile mutations. We studied the relation between vital and male-fertility genes in three large autosomal regions that were saturated for lethal and male-sterile mutations. The majority of male-sterile mutations affect genes that are exclusively expressed in males. These genes are required only for male fertility, and several mutant alleles of each such gene were encountered. A few male-sterile mutations were alleles of vital genes that are expressed in both males and females. About one-fifth of the genes in Drosophila melanogaster show male-specific expression in adults. Although some earlier studies found a paucity of genes on the X chromosome showing male-biased expression, we did not find any significant differences between the X chromosome and the autosomes either in the relative frequencies of mutations to male sterility or in the frequencies of genes with male-specific expression in adults. Our results suggest that as much as 25% of the Drosophila genome may be dedicated to male fertility.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Espermatogênese
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Genômica
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Drosophila melanogaster
Limite:
Animals
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article