Arrange these steps in the correct order to explain how a muscle fiber contracts

your answer is "the 1950's"

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

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.