Why can’t different species impregnate eachother? For instance, a German shepherd can breed with a pug, but can’t breed with a deer.

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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

3 Answers

Anonymous 0 Comments

Amount of DNA is different. The genes on chromosomes are different.
Gametes of different species do not have the right proteins to recognize each other and fuse.
Mating behavior and mate selection between different species are too different to allow for breeding.

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