---
title: "Пол будущего крокодила определяется не генами"
description: "Крокодилы – одни из древнейших обитателей нашей планеты, наиболее близкие родственники динозавров, в..."
author: "mereyrtyut"
published: "2010-01-30T10:15:24+00:00"
modified: "2010-01-30T10:15:24+00:00"
locale: "ru"
canonical_url: "https://yvision.kz/post/pol-budushchego-krokodila-opredelyaetsya-ne-genami-28957"
markdown_url: "https://yvision.kz/post/pol-budushchego-krokodila-opredelyaetsya-ne-genami-28957/markdown"
site_name: "Yvision.kz"
---

# Пол будущего крокодила определяется не генами

> Крокодилы – одни из древнейших обитателей нашей планеты, наиболее близкие родственники динозавров, в...

Крокодилы – одни из древнейших обитателей нашей планеты, наиболее близкие родственники динозавров, вымерших более 60 млн. лет назад. Одной из особенностей крокодилов, является то, что пол эмбриона определяется не генетически, а зависит от температуры окружающей среды. Если температура в гнезде колеблется от 32 до 33 Сº, то из яиц вылупляются самцы, если же температура ниже 31 Сº, или выше 33 Сº, то потомство будет состоять только из самок. Смешанные выводки объясняются тем, что, как правило, температура на дне гнезда отличается от температуры наверху.

Врагов у взрослых крокодилов практически нет, если не считать человека. Однако потепление климата грозит этим рептилиям вымиранием. Повышение температуры окружающей среды приведет к тому, что из яиц преимущественно будут вылупляться самки

Кстати, по мнению ученых, именно изменения климата привело к исчезновению динозавров. Предположительно пол динозавров, так же как и крокодилов, определялся температурой окружающей среды. А глобальное похолодание привело к тому, что в подавляющем большинстве стали вылупляться самцы.

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Source: [https://yvision.kz/post/pol-budushchego-krokodila-opredelyaetsya-ne-genami-28957](https://yvision.kz/post/pol-budushchego-krokodila-opredelyaetsya-ne-genami-28957)