Nucleic acids - dna or rna. chemically, they are similar. structurally, there are differences. which formula represents dna? a. b) c. eliminate d)

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.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.