Why can’t different species impregnate eachother? For instance, a German shepherd can breed with a pug, but can’t breed with a deer.
In: Biology
There’s ways that egg cells recognize viable sperm cells. They use proteins that link together in order to make a working connection.
Think of it as studs on lego blocks, you can build with all kinds of lego blocks because they all fit together.
Lego city, space lego, though they’re different sets their studs are all the same.
Now try to click some mechano on to lego. It won’t stay put, the studs, (proteins) won’t fit together.
So all dogs are basically legos, but horses or cows or sheep or corn, different building systems.
All made of plastic but with diffrent kinds of studs to lock in to place.
Some species are still fairly close, like lions and tigers, horses and donkeys, think of those like Legos and megablocks they’ll fit together, but what you wind up with isn’t really structurally sound.
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