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.
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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)
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
Contrast homologous and analogous traits, giving examples
What will be an ideal response?
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.