Newer layers of earth form on top of older layers, so as we dig, we can see further back in time. Comparing the fossils between the layers can offer evidence of change.

Phyletic gradualism - slow, but constant gradual change; supported by transitional species in the fossil record

Punctuated equilibrium- long periods of no change followed by short periods of rapid change. Can also be supported by the fossil record when no transitional species are found.

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3 years ago

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What physical constraints control crossover frequencies.

nata0808 [166]

The probability of a crossover occurring between two particular genes on the same chromosome increases as the distance between those

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2 years ago

(tco 3) the hormone ________ is released after the ingestion of a meal and triggers the stomach to release digestive juices.

Marizza181 [45]

The answer is Gastrin

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