-The Barrier Between the Squirrel Populations _____________

question 15

Multiple Choice

-The barrier between the squirrel populations _____________

• A) will produce distinct species as soon as the barrier becomes impassible
• B) should not greatly interfere with both populations accessing both mountaintops
• C) is the first part of an extinction event for both populations
• D) is an effective barrier to mating and gene-flow between the two populations
• E) will cause completely different mutations to occur in the two populations

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Definitions:

K-Pg Boundary

The geological signature marking the end of the Cretaceous period and the beginning of the Paleogene, associated with the mass extinction event that killed the dinosaurs.

Meteorite Impact

A phenomenon where a meteoroid enters Earth's atmosphere and collides with the Earth's surface, potentially causing significant ecological and geological changes.

Embryonic Development

The process by which an embryo forms and develops, starting from a single fertilized cell through to a multi-cellular organism, involving cell division, differentiation, and morphogenesis.

Conservation of Genes

The principle that certain genes are preserved and remain unchanged throughout the evolution of species.