Not much physical evidence of life is available from rocks of the Precambrian because these ancientrocks:a
have been greatly eroded in most areas.
b. have been deeply buried in most areas.
c. have been deposited in oceanic trenches deep in the oceans.
d. occupy inaccessible areas of mountainous regions.
e. occupy the polar regions and are thus covered by glaciers
B
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Raising small beetles for several generations, a distinctive phenotype in the wing shape appears, skipping generations. This trait most likely appears only in the genotype, and can help determine the Hardy-Weinberg probability of inheritance in the population.
A. any genotype with the dominant allele, 2pq B. heterozygous, 2pq C. None of the answer choices is correct. D. homozygous recessive, q2 F. homozygous dominant, p2
A phylogenetic tree grouping that consists of a common ancestor and all of its descendants is known as a ________ group
A) monophyletic B) paraphyletic C) polyphyletic D) polytomy
In a cross between a homozygous red-eyed female fruit fly and a white-eyed male fruit fly, what is the expected outcome?
a) all white-eyed male offspring b) all white-eyed female offspring c) all red-eyed offspring d) half white-eyed make offspring
Psilocybin is a
A) toxin that causes bloody diarrhea. B) toxin that causes kidney failure. C) toxin that acts as a hallucinogen. D) virulence factor produced by invasive fungi. E) growth factor produced by mycoplasmas.