evolution

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What is evolution?

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Evolution is the process through which species change over time through variations and natural selection.

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What is a common ancestor?

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A common ancestor is a species from which two or more different species have evolved.

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What is natural selection?

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Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What is directional selection?

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Directional selection is a type of natural selection that favors one extreme phenotype over the mean or other extreme.

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What is stabilizing selection?

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Stabilizing selection is a type of natural selection that favors average phenotypes and reduces variation.

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What is disruptive selection?

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Disruptive selection is a type of natural selection that favors extreme phenotypes over average ones.

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What is a cladogram?

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A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

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What is antibiotic resistance?

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Antibiotic resistance is the ability of bacteria to survive and reproduce despite the presence of antibiotics.

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How do mutations contribute to evolution?

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Mutations introduce new genetic variations, which can lead to new traits that may be beneficial for survival.

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What is the significance of DNA sequencing in evolutionary biology?

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DNA sequencing helps scientists understand the genetic similarities and differences between species, indicating their evolutionary relationships.