If such a snail is removed from its attachment, it will become female. They concluded that this differentiation in climate causes divergent selection on regulatory elements in the sex-determining network allowing for the emergence of sex chromosomes in the highlands.
Bibcode : PLoSO Most dioecious plant species are believed to derive from hermaphrodite ancestors.
Low variability in a Y -linked plant gene and its implications for Y-chromosome evolution. Bibcode : PLoSO Journal of Animal Ecology. It has been proposed  that temperature acts on genes coding for such steroidogenic enzymesand testing of homologous GSD pathways has provided a genic starting point.
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In this Page. While sex hormones have been observed to be influenced by temperature, thus potentially altering sexual phenotypes, specific genes in the gonadal differentiation pathway display temperature influenced expression.
They concluded that this differentiation in climate causes divergent selection on regulatory elements in the sex-determining network allowing for the emergence of sex chromosomes in the highlands. Some other conditions, e.
It is used in reference to species with temperature-dependent sex determination, such as crocodilians and turtles. Categories : Herpetology Sex-determination systems. Turn recording back on. In this species, individuals pile up on top of one another to form a mound Figure