According to Darwan's theory of evolution, which organisms are BEST able to survive in mature

answer: node would be introduced.   is the correct

explanation:

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.

cell/ tissue/ organ/ organ system/ body

for a different answer set the answer would be because the oxygen in the water had depleted (apex)