When a large portion of a population’s gene pool is suddenly wiped out due to a natural disaster, what is this called?
a. gene flow
b. founder effect
c. bottleneck effect
d. natural reduction in alleles
c. bottleneck effect
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Living organisms are members of all of the levels listed below. However, soil is a component of ___
a. the community b. the population c. the ecosystem d. both the population and ecosystem e. both the community and the biosphere
The influenza virus can infect:a
humans b. pigs c. birds d. humans and pigs e. humans, pigs and birds
Vibrio cholerae is the bacterium responsible for cholera, a GI tract infection. Normally, it takes the ingestion of over one million bacterial cells to cause infection, but the consumption of antacids signficantly lowers this number. What does this tell you about the likely classification of V. cholerae in terms of pH preference?
It is likely an acidophile. It is likely an alkaliphile. It is likely an neutrophile.
3 parts of digestive tract in mucosa layer which contains cells that produce digestive enzymes
What will be an ideal response?