lucyamine0
10.09.2019 •
Biology
Animal science
1. what species of animals come into heat as the days get shorter
2. at what moment does the ovulation occur within the ovary
3. what supplies nutrients to the fetus during development
4. in what portion of the reproductive tract is the egg fertilized
5. for how long can poultry can store semen
6. what is one function which the vulva and the sheath share
7. what produces the ovum or egg
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Ответ:
b) In the population, there must be one or more traits for which individuals differ.
Explanation:
Natural selection refers to the differential process of survival and reproduction caused by phenotypic differences among individuals in particular environmental conditions. These phenotypic differences are due to genetic variation among individuals, which is the primary source on which the natural selection act. In consequence, natural selection is composed of three main components: 1-variation among individuals, 2-inheritance of the phenotypic traits that vary within a population or species, and 3- different survival and reproduction.