To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).
It is known as a transgenic organism. This procedure is otherwise called "genetic engineering." Genes of one species can be altered, or qualities can be transplanted starting with one animal types then onto the next. Genetic engineering is made conceivable by recombinant DNA innovation. Living beings that have modified genomes are known as transgenic.
Polar because it always is below 32 degrees and has no rainfall
