Je hybridizace jedinou cestou k asexualitě obratlovců?

Název projektu anglicky
Is hybridization the only way to asexuality in vertebrates?
Anotace anglicky
Sexual reproduction is the norm in vertebrates, but some lineages reproduce “asexually”. It is stated that probably all exclusively asexually reproducing vertebrates are of a hybrid origin. Obligate parthenogenesis, the exclusive asexual reproduction in which the development of embryos occurs without sperm, was proven among vertebrates only in reptiles. In four lineages of these asexual hybrids, the production of unreduced eggs is based on premeiotic endoreplication and subsequent ploidy reduction by meiotic division. Nevertheless, obligate parthenogenesis might also evolve without a hybridization from facultative parthenogenesis, which is based on the fusion of the nuclei of the egg and the polar body, not on premeiotic endoreplication. The hybrid and non-hybrid origin of obligate parthenogenesis can be thus distinguished by genomic analyses and cytological examination. We will explore evolutionary and cytological mechanisms of the obligate parthenogenesis in two lizard lineages, which to us represent the best candidates for a non-hybrid origin of obligate asexuality in vertebrates.

Kategorie VaV
ZV - Základní výzkum
OECD FORD - hlavní obor
10613 - Zoology
OECD FORD - vedlejší obor
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OECD FORD - další vedlejší obor
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CEP - odpovídající obory <br>(dle <a href="http://www.vyzkum.cz/storage/att/E6EF7938F0E854BAE520AC119FB22E8D/Prevodnik_oboru_Frascati.pdf">převodníku</a>)
EG - Zoologie

Důvěrnost údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Systémové označení dodávky dat
CEP24-GA0-GA-R
Datum dodání záznamu
19. 2. 2024

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