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What is natural selection?

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Natural selection is the process by which organisms that are better adapted to their environment tend to survive and produce more offspring. It leads to changes in inherited traits in a population over time.

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What are inherited traits?

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Inherited traits are characteristics that are passed from parents to offspring through genes. Examples include eye color, height, and certain behaviors.

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What is an allele?

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An allele is a variant form of a gene that can result in different traits. For example, a gene for flower color may have a red allele and a white allele.

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What does it mean if an allele increases in a population?

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If an allele increases in a population, it means that the trait associated with that allele is becoming more common, often due to natural selection favoring individuals with that trait.

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What is a hypertonic solution?

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A hypertonic solution is one that has a higher concentration of solutes compared to another solution, causing cells in that solution to lose water and shrink.

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What is the cell cycle?

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The cell cycle is the series of phases that a cell goes through to grow and divide. It includes phases such as G1, S (synthesis), G2, and M (mitosis).

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What happens during the S phase of the cell cycle?

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During the S phase, DNA replication occurs, resulting in the duplication of the cell's genetic material.

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What are prokaryotes?

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Prokaryotes are single-celled organisms that lack a nucleus and membrane-bound organelles. Bacteria are the most common examples of prokaryotes.

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What are eukaryotes?

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Eukaryotes are organisms whose cells contain a nucleus and membrane-bound organelles. Examples include plants, animals, and fungi.

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What is the difference between autotrophs and heterotrophs?

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Autotrophs are organisms that produce their own food through photosynthesis or chemosynthesis, while heterotrophs obtain their food by consuming other organisms.