Determining whether speciation is occuring allopatrically or sympatrically is really about determine how much what is occuring between the two diverging populations

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Dna replication or repair occurs in a cell in all of thw following situations except when