How many bases do deletion-insertion polymorphisms (DIPs) most frequently involve?

A) 1–2
B) multiples of 3
C) 10–100
D) more than 100


A) 1–2

Biology & Microbiology

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Ecologists use a variety of useful sampling and statistical techniques for delineating and classifying communities

Indicate whether the statement is true or false

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Which one of the following helps make ecosystems more stable?

A. biodiversity B. bacteria C. stable amounts of sunlight D. rainfall

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As cell size increases, the

A) volume and surface area decrease. B) volume increases proportionally more than the surface area. C) surface area increases proportionally more than the volume. D) ratio of surface area to volume stays the same.

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