b1
what is the shape of the dna, and how is it formed?
double helix formed from two strands that wind around each other
what is a gene?
a short section of dna that codes for a characteristic
what's a mutation?
a random change in the sequence of DNA
what is adaptation?
a characteristic which inscreases an organisms chance of survival and reproduction
what's natural selection?
the process by which individuals who are better adapted to survive increase their chance of reproducing
what is variation?
differences between individuals