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Biochemistry I - Evolution

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Section 1

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Are natural selection and evolution the same thing? If not, what makes them different?

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6 years ago

Date created

Mar 1, 2020

Cards (7)

Section 1

(7 cards)

Are natural selection and evolution the same thing? If not, what makes them different?

Front

They are NOT the same thing, as natural selection is a mechanism by which evolution occurs.

Back

In general, what does natural selection state?

Front

That certain characteristics or traits possessed by individuals within a species may help those individuals have greater reproductive success.

Back

Differentiate between convergent, divergent, and parallel evolution.

Front

Convergent is the independent development of similar characteristics in lineages NOT sharing a common ancestor Divergent is the independent development of DISsimilar characteristics in lineages SHARING a common ancestor. Parallel is where related species evolve in similar ways for a long period of time in response to analogous environmental cues.

Back

T/F Punctuated equilibrium states some changes in species occur very quickly

Front

T

Back

What is the biological definition of a species?

Front

Largest group or organisms capable of producing fertile progeny.

Back

What does inclusive fitness refer to?

Front

This is the measure of an organism's success in the population. This takes in to account other factors other than simply the number of viable offspring (such as altruism).

Back

Differentiate between stabilizing, directional, and disruptive phenotype selection.

Front

Stabilizing keeps phenotypes within a specific range by narrowing against extremes. Directional leads to an initially extreme phenotype that creates a new standard phenotype. Disruptive leads to TWO initially extreme phenotypes that can lead to speciation.

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