In the semi-conservative model of replication, what percent of the parental DNA (generation 0) remains in generation 4?
a. 25%
b. 50%
c. 100%
d. 12.5%
c. 100%
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In skeletal muscle, an action potential leads directly to ________
a. the binding of actin with myosin b. the detachment of troponin from actin c. flexure of the already bound myosin heads d. the release of calcium from the sarcoplasmic reticulum
Barnacles are more adept than mussels at withstanding the effect of desiccation
Indicate whether the statement is true or false
Which fish can grow to weigh a ton, and is known for high levels of internal and external parasites?
a. billfish. b. skipjack tuna. c. ocean sunfish. d. great white shark. e. pilot fish.
Communities evolve to have greater biomass and species richness in a process called
A. sympatric interactions. B. adaptive modifications. C. succession. D. symbiotic relationships. E. competitive exclusion.