Tuesday, June 30, 2026
Science

The battle of the sexes in the egg: How early nuclear rivalry helps embryos develop properly

The sperm and the egg cell's nuclei compete for size directly after fertilization and this is necessary for proper embryonic development. A mouse study with Kobe University participation finally gives meaning to a phenomenon biologists have known for decades.

The battle of the sexes in the egg: How early nuclear rivalry helps embryos develop properly
Image: Phys.org
The sperm and the egg cell's nuclei compete for size directly after fertilization and this is necessary for proper embryonic development. A mouse study with Kobe University participation finally gives meaning to a phenomenon biologists have known for decades.

Originally published at Phys.org

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