In this STD early symptoms include flattened
painless chancres and long term can cause
mental illness, blindness, and death. This STD
is
a. gonorrhea.
b. siphilis.
c. chlamydia.
d. trichomoniasis.
e. genital herpes
B
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All of the following proteins may be found in the extracellular matrix of animal cells EXCEPT _____
A) collagen B) fibronectin C) actin D) All of the listed proteins are found in the extracellular matrix of animal cells.
Reinforcement is most likely to drive the evolution of
A. prezygotic isolating mechanisms, because selection favors alleles that prevent hybridization. B. postzygotic isolating mechanisms, because selection acts after the formation of hybrids. C. prezygotic isolating mechanisms, because selection favors alleles that promote hybridization. D. postzygotic isolating mechanisms, because hybrids have low fitness relative to the parents.
Organisms that reproduce repeatedly are said to be
A. semelparous. B. cohorts. C. iteroparous. D. demographic. E. survivors.
A negative rate of increase, or a negative r, means that:
A) death rates have decreased. B) the population has a short generation time. C) the population is shrinking. D) there is zero population growth.