What is separase?
A. A protein that marks a protein called securin for destruction.
B. A protein that is part of the cohesin complex.
C. A protein that destroys cohesin through its protease activity.
D. A protein that targets the mitotic cyclin for degradation.
C. A protein that destroys cohesin through its protease activity.
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The isolation of a small gram-positive, catalase-positive rod with a narrow zone of hemolysis isolated from blood or CSF should be used as strong presumptive evidence for:
a. listeriosis. b. diphtheria. c. pertussis. d. tetanus.
The agent of microevolutionary change that is most likely to introduce genetic variation from another population is
referred to as ____.
a. genetic drift b. gene flow c. natural selection d. mutation e. nonrandom mating
In addition to electrons, which of the following is also involved in electron transfer?
A. Glucose B. Hydrogen C. ADP D. Carbon E. Carbon dioxide
Natural selection operates directly on
a. the genotype. b. individual alleles. c. the phenotype. d. color only.