If a mutation occurs in the gene for the lac repressor and results in a repressor that does not bind lactose, which of the following will be observed?
a. the mutant will not be able to grown on lactose.
b. the mutant will only be able to grow on lactose.
c. the mutant will be able to grow on lactose and on other sugars.
d. the mutant will be harmed by the presence of lactose.

How was the climate when the ambulocetus was alive

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

Which would be the most useful source of evidence to support mcneill's contention?