自然选择

Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become …

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural …

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to …

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly …