Use the drop-down menus and the image to complete these statements about prokaryotes.
prokaryotes (do not have) a nucleus surrounding their chromosome of dna.
prokaryotes are (more) simple cells than eukaryotes.
prokaryotes have a (cell wall) outside their cell membrane that gives protection and support.
prokaryotes will often move by a tail-like (flagellum) .

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.

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

Pl which diagram illustrates prophase?