The diagram shows a population before and after a chance event.
Which statement describes how the new population is changed after the chance event?
a
The new population reproduces with a larger gene pool, which increases diversity.
b
The new population contains the same alleles that existed in the gene pool, which increases diversity.
c
The new population reproduces with a smaller gene pool, which decreases diversity.
d
The new population contains new alleles that did not previously exist in the gene pool, which decreases diversity.
d
The new population contains new alleles that did not previously exist in the gene pool, which decreases diversity.