Chromosomes are coiled structures made of dna and proteins.
An egg or sperm with an extra chromosome or missing a chromosome is then made.
Eggs and sperm have coiled structures made of dna and proteins.
What are one thing the combination of proteins and DNA make up?

a) alleles
b) sperm
c) insects
d) embryos
e) fusion
f) PDAs
g) humans
h) complex