Answer quickly

Natural selection operates on populations over many generations. Which of the following allows natural selection to occur?

A.
the old age of the individuals which causes them to die
B.
the desire and the advantage of a population to remain constant
C.
the unequal ability of individuals to survive and reproduce
D.
the abilty for populations to change quickly from one trait to the next

Mutations associated with albinism affect proteins involved in synthesis

One gene can influence trait(s). one trait can be determined by gene(s).

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos