The conditions required for natural selection are populations have genetic variation, organisms overproduce offspring and nature selects favorable adaptations.
What is natural selection?
- "Natural selection is the process through which populations of living organisms adapt and change."
- In order to adapt and survive in a changing environmental conditions, the organisms undergo into some changes (changes in traits) over time which leads to genetic variation among them. The best adapted characters/traits of organisms will survive and will creates its progeny (having new traits). It means that nature selects the most favorable adaptations.
What do you mean by genetic variation?
- "It is a term used to describe the variation in the DNA sequence in each of our genomes."
What is adaptation?
- "It is the biological mechanism by which organisms adjust to new environments or to changes in their current environment."
- Example: To reduce transpiration leaves of some plans are modified into spines.
Hence, the correct options are: 1. Populations have genetic variation. 2. Organisms overproduce offspring. 5. Nature selects favorable adaptations.
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