<span>Sterilization of animals reduces the level of circulating reproductive hormones leading to increased longevity, typically due to reduce cancer mortality. The primary aim of animal sterilization is avoiding overpopulation, but this increased longevity could be an added benefit for an individual animal.</span>
Homozygous means that it has the same alleles and lower case represents a recessive trait therefore the genotype for a homozygous recessive individual is: bb
Curing heart disease by regenerating damaged heart tissue.
