Pregnancy In Mammals Evolved with Help from Roving DNA by Kate Baggaley | Free Audiobook

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Title: Pregnancy In Mammals Evolved with Help from Roving DNA
Author: Kate Baggaley
Narrator: Mark Moran
Format: Unabridged
Length: 1 min
Language: English
Release date: 01-31-15
Publisher: Science News
Genres: Science & Technology, Magazine & Radio

Summary:
Roving pieces of DNA helped early mammals ditch egg-laying in favor of giving birth to live young. These jumping genes, or transposable elements, flipped the switch on thousands of genes, turning off ones that build hard eggshells and turning on ones that allow a fetus to develop in the uterus.
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