When a warmer stream flows into a cooler lake, what happens? please answer will mark brainelist

it steams cuz of the hot mixing with the cold

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

answer; both surfaces of the membrane are nonpermeable