Unit 3 - Review Flashcardizz

Front

What is Directional Selection?

Back

A type of natural selection that favors one extreme phenotype over the mean or other extreme, leading to a shift in the population's traits.

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What is Stabilizing Selection?

Back

A type of natural selection that favors intermediate variants by acting against extreme phenotypes, leading to reduced variation.

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What is Disruptive Selection?

Back

A type of natural selection that favors extreme phenotypes over intermediate phenotypes, potentially leading to speciation.

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Example of Directional Selection?

Back

The increase in size of the beaks of finches during droughts, where larger beaks are favored for accessing food.

Front

Example of Stabilizing Selection?

Back

Human birth weights, where very low or very high weights have lower survival rates, favoring average weights.

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Example of Disruptive Selection?

Back

In a habitat with black and white rocks, black and white rabbits survive better than gray rabbits.

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What is Natural Selection?

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The process where organisms better adapted to their environment tend to survive and produce more offspring.

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What is a Common Ancestor?

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An ancestral species from which multiple species have evolved, often represented in a phylogenetic tree.

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What is Camouflage?

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A survival strategy where an organism blends in with its environment to avoid detection by predators.

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What is Phenotype?

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The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environment.