Which aspect(s) of natural selection is(are) illustrated by the figure below? Check all that apply.





_____  Variation must exist in the population.

_____  Variation among individuals must be genetically transmissible to the next generation.

_____  Variation among individuals leads to differences in lifetime reproductive success.

_____  More individuals are produced each generation than the environment can support, resulting in competition for survival.


__X__  Variation must exist in the population.
__X__  Variation among individuals must be genetically transmissible to the next generation.
_____  Variation among individuals leads to differences in lifetime reproductive success.
_____  More individuals are produced each generation than the environment can support, resulting in competition for survival.

Biology & Microbiology

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Many bacteria that exhibit gliding motility are able to use as a nutrient source insoluble material that they encounter while gliding.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Prokaryotic transcription always proceeds from the same DNA strand for each gene. What do we call this strand?

a. pattern strand b. nonsense strand c. template strand d. holostrand

Biology & Microbiology

Contrast homologous and analogous traits, giving examples

What will be an ideal response?

Biology & Microbiology

Histamine, serotonin, and bradykinin are all

A. mediators that increase chemotaxis. B. mediators of T-cell activity. C. fever inducers. D. mediators of B-cell activity. E. vasoactive mediators.

Biology & Microbiology