OK so I will put up a picture and it is a hypothesis for science I need to disprove it so basically please help me find evidence that this hypothesis is wrong.

I bet you got some fresh shoes

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.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.