If the allele for an attached earlobe (e) is recessive to the allele for an unattached earlobe (E), what will be the relative frequency of e in a population? It could only be more frequent than E. It could be more or less frequent than T. It could only be equally as frequent as T. It could only be less frequent than T.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

the correct answer is:

a population changes in response to a change in the environment.

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d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.