CBSE Class 10 Answered
Give an easy and perfect defination of natural selection and genetic drift.
Asked by Tejasvikumar12438 | 27 Feb, 2019, 10:42: AM
Expert Answer
- Natural selection: All populations respond to changes in their environment. Individuals will respond in different ways depending on their genes. Those individuals whose genes are best suited to the environment are more likely to survive and pass on their genes to the next generation. This is natural selection.
- Genetic drift: It is caused due to drastic changes in the frequencies of particular genes by chance alone. Genetic drift with changes in the gene flow imposed by isolation mechanism acts as an agent of speciation which ultimately results in evolution.
Answered by Sheetal Kolte | 27 Feb, 2019, 11:02: AM
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