In humans gene flow usually comes about through the actual migration of human populations, either voluntary or forced. Although gene flow does not change allele frequencies for a species as a whole, it can alter allele frequencies in local populations.
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Answer:
A
Explanation:
Quantitative refers to numbers and measurements, so height would be a quantitative observation.
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The two upper chambers are the atria or auricles. They are the left and right atriums
The situation is an exponential growth wherein an example is on population when as the population gets larger, it grows more quickly.
Answer:
D
Explanation:
Methanogens are prokaryotes and therefore have prokaryotic cells. They are single-celled archaea. They are found in hypoxic conditions like the first stomach of ruminants where they digest molecules like cellulose and produce methane as a byproduct. The rest are composed of eukaryotic cells which are much larger than prokaryotic cells and their organelles are membrane-bound (unlike prokaryotes).
