Which of the following represents a prezygotic barrier to reproduction?

a. hybrid sterility
b. hybrid breakdown
c. behavioral isolation
d. hybrid inviability
e. hybrid weakness


C

Biology & Microbiology

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Which of the following is used in the production of buttermilk and cheese?

A. Enterococcus faecalis B. Streptococcus pneumoniae C. Lactococcus lactis D. Streptococcus mutans

Biology & Microbiology

Could an isolated melanin granule move along an actin microfilament?

A. Yes, melanin granules have motor proteins. B. Yes, motor proteins all use ATP to cause a conformation change. C. No, motor proteins are specific for the type of filament they bind. D. Answers a and b are both correct.

Biology & Microbiology

Approximately ________ million years ago the amniotes branched off from their amphibian ancestor

a. 300 b. 250 c. 355 d. 180 e. 425

Biology & Microbiology

Somatic pain is associated with all of the following structures except ________

a. joints b. tendons c. skin d. skeletal muscles e. stomach

Biology & Microbiology