How does the fossil record provide evidence for evolution?
a. By showing similarity of structures in organisms that show the same basic form
b. By showing the convergence of forms in living organisms
c. By showing the similarity of DNA sequences of related organisms
d. By determining the age of fossils, the fossil record shows the evolution of form over millions of years
d. By determining the age of fossils, the fossil record shows the evolution of form over millions of years
By determining the age of fossils, the fossil record shows the evolution of form over millions of years, which provides evidence for evolution.
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Two alleles of gene C control hair color in horses: C¹ and C². Horses homozygous for allele C¹ are red, heterozygotes are yellow, and C² homozygotes are cream. In the offspring of matings between heterozygotes, what phenotypic ratio is expected?
A) 2 yellow: 1 red B) 3 red: 1 cream C) 1 red: 2 yellow: 1 cream D) all red E) 9 red: 3 yellow: 4 cream
Explain how the graphed data of beak size and weather conditions is evidence for natural selection. 
What will be an ideal response?
In which type of response are Toll-Like Receptors (TLR's) important to pathogens?
A) innate response B) complement response C) protective immunity D) adaptive immunity E) barrier to infection
A small number of species that are abundant in a given community are called:
A) community species. B) ecological dominants. C) keystone species. D) dominant species.