Where are u maahi(kdhir) pls reply

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?

What kinds of molecules can pass through the cell membrane without any problem?