de novo transcription of multiple Hox cluster genes takes place simultaneously in early Xenopus tropicalis embryos
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چکیده
منابع مشابه
Cytochrome P450 Family 1 Genes in Xenopus tropicalis
Cytochrome P450 family 1 (CYP1) genes are involved in the metabolism of chemical pollutants including halogenated aromatic hydrocarbons such as 2,3,7,8-terachlorodibenzo-p-dioxin (TCDD). Whereas the molecular characterization of CYP1 genes has been well investigated in various vertebrates, information on CYP1 genes in amphibians is relatively scarce. In the present study, we attempt to characte...
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We describe the Hox cluster in the radially symmetric sea urchin and compare our findings to what is known from clusters in bilaterally symmetric animals. Several Hox genes from the direct-developing sea urchin Heliocidaris erythrogramma are described. CHEF gel analysis shows that the Hox genes are clustered on a < or = 300 kilobase (kb) fragment of DNA, and only a single cluster is present, as...
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Sex determination shows a great diversity of mechanisms, ranging from temperature and other environmental cues to strict chromosomal control over this process. In the case of genetic sex determination, this variability is linked to a similarly high variation of sex chromosome differentiation. In vertebrates the most widespread situation is that a pair of sex chromosomes differs in males and fem...
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When nuclei (pronuclei) were assembled from sperm chromatin in Xenopus egg extract and examined by immunofluorescence microscopy, UBF was concentrated at a single intranuclear dot-like or more extended necklace-like structure. These UBF-foci contained rDNA as demonstrated by in situ hybridization and hence represent the chromosomal nucleolus organizing regions (NORs). Besides UBF, other compone...
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ژورنال
عنوان ژورنال: Biology Open
سال: 2019
ISSN: 2046-6390
DOI: 10.1242/bio.038422