What structures allow small particles to cross cell membranes

Identifying the elements of hypothesis-based science this experiment is an example of hypothesis-based science. what question did the researchers ask? what question did the researchers ask? can predation result in selection for color patterns in guppies? do female guppies prefer to mate with males with bright color patterns or drab colors? do male guppies in pools with pike-cichlid fish have brighter color patterns than females in the pool? do killifish prefer to prey on juvenile guppies or adult guppies?

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

Why was mendel's work not accepted at the time? o a. his results were false. o b. he did not repeat his experiments. o c. he did not have any data. o d. his results were surprising,