Vitellogenin gene family in vertebrates: evolution and functions
نویسندگان
چکیده
منابع مشابه
Gene Family: Structure, Organization and Evolution
Gene families are considered as groups of homologous genes which they share very similar sequences and they may have identical functions. Members of gene families may be found in tandem repeats or interspersed through the genome. These sequences are copies of the ancestral genes which have underwent changes. The multiple copies of each gene in a family were constructed based on gene duplicati...
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Homeobox cluster genes (Hox genes) are highly conserved and can be usefully employed to study phyletic relationships and the process of evolution itself. A phylogenetic survey of Hox genes shows an increase in gene number in some more recently evolved forms, particularly in vertebrates. The gene increase has occurred through a two-step process involving first, gene expansion to form a cluster, ...
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DNA-cDNA titrations suggest that the Xenopus genome comprises two albumin genes, whereas there are 12 to 16 vitellogenin-like genes. Both sets of genes are expressed in liver, those coding for albumin constitutively, but vitellogenin only when induced by estrogen in both male and female frogs. Mild micrococcal nuclease digestion of liver nuclei to separate “expressed” from “unexpressed” gene fr...
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ژورنال
عنوان ژورنال: The European Zoological Journal
سال: 2019
ISSN: 2475-0263
DOI: 10.1080/24750263.2019.1631398