Explain Why Organisms Undergoing Rapid Evolutionary Change Often Contain Relatively

question 43

Essay

Explain why organisms undergoing rapid evolutionary change often contain relatively large numbers of mobile DNA elements, whereas once organisms settle into a stable evolutionary niche, most of these mobile elements are lost.

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Definitions:

Conveyor-belt Manner

A way of describing the movement and recycling of materials, often used in the context of plate tectonics and ocean currents.

Asthenosphere

A region of the Earth's upper mantle that lies just below the lithosphere and is involved in plate tectonic movements due to its plasticity.

Mid-ocean Ridges

Underwater mountain ranges formed by the upwelling of magma where tectonic plates are diverging, key sites of seafloor spreading.

Granodiorite

A coarse-grained igneous rock similar to granite but with more plagioclase feldspar compared to orthoclase feldspar.