which animal will always give birth to identical quadruplets?

The animal that always gives birth to identical quadruplets is the nine- banded armadillo , and more generally armadillos of the genus Dasypus are known for this pattern of reproduction.

Quick Scoop

• The nine-banded armadillo (Dasypus novemcinctus) is the only known vertebrate that reliably produces genetically identical quadruplets every pregnancy.

• A single egg is fertilized, then splits into four embryos that share one placenta, so all four babies are natural clones of each other.

• This phenomenon is called polyembryony , and among vertebrates it is uniquely documented in armadillos of the genus Dasypus.

A bit more detail

• In nine-banded armadillos, every litter normally contains four young of the same sex, and they are genetically identical because they come from one original embryo.

• Scientists still do not fully understand why this reproductive strategy evolved, but it has made armadillos important study animals in genetics and developmental biology.

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