This would be survival of the fittest and evolution at work. Because the gray mice are harder for the birds to see, they live to reproduce and pass their genes for color on. This is why most wild mice are gray in color, while domesticated mice are a variety of colors. Domesticated mice were bred to be pretty, while the wild mice breed for survival.
This is an example of natural selection, specifically disruptive selection where extreme phenotypes are disadvantageous compared to an intermediate one. The environment favors the gray mice due to their better camouflage, leading to their increased survival and reproductive success.
Stabilizing Selection
The ability to survive and reproduce
Because as they are homozygous recessive they are only lethal when a person inherits an allele from both parents, meaning that each parent must be heterozygous carriers of the gene, and even then it's only a 1 in 4 chance that the offspring will be homozygous recessive and therefore it's unlikely they will die. And if they do not die then the will survive to likely pass on the gene.
Darwin called the ability of an organism to survive and reproduce in its environment fitness.
A species must be able to find food, shelter, and water in order to survive and reproduce. Until a species is able to meet its essential needs, it is not able to reproduce and survive.
To survive, they must.
To survive and reproduce.
All animals must reproduce in order to survive.
poopy
warmness
No
Survive and reproduce.