Which statement describes the effect that a DNA mutation most likely has on an organism? A. The mutation results in a gene that codes for a different protein.

B. The mutation causes the cell to no longer produce proteins from altered genes.

C. The mutation causes the cell to reject the existing genes and proteins made from those genes.

D. The mutation produces extra copies of genes that the cell uses as backups during protein production.

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables