Aretrotransposon known as alu1 is about 300 base pairs in length and is present in the human genome in about 1 million copies. approximately what percentage of the human genome is accounted for by this transposon?

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

What happens whenever a net force acts on an object