Similarity in evolutionarily unrelated groups due to adaptation to similar environments is called
A. Hardy-Weinberg equilibrium.
B. convergent evolution.
C. concentric evolution.
D. biogeographic evolution.
Answer: B
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Population geneticists are interested in the forces that change the ____________________ of genes in a population
Fill in the blank(s) with correct word
In the CRISPR / Cas system of a particular bacterial cell, it is noted that there are six spacer regions. What does this suggest about the bacterial cell?
A. The cell has six CAS genes due to past infections by viruses. B. The cell has been infected by six viruses in the past. C. The cell has developed protection from six different viruses. D. The cell has been infected by six viruses in the past and now has developed a level of protection against all of them.
Gross primary productivity refers to the total
a. quantity of solar energy available to the ecosystem in a given period of time. b. quantity of solar energy reaching a given area of the ecosystem. c. energy trapped initially by the producers. d. energy used by the heterotrophs of the ecosystem in a given period of time. e. energy used by the producers for their growth and reproduction.
In general, the sulfate-reducing bacteria (SRB) can oxidize carbon substrates such as lactate, formate, butyrate, propionate, pyruvate, or aromatic compounds to acetate.
Answer the following statement true (T) or false (F)