Which term names two different forms of a single gene?
Question 1 options:

factors

alleles

chromosomes

traits

alleles is the correct answer. i hope this helped. have a great day

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.