Exam 1 essay questions with correct detailed answers graded a+.
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ESSAY
What was so important about the T-rex discovery made by Mary Higby Schweitzer? - correct answer She found collagen protein in the T-rex from 70 million years ago. This shows/proves that fossils form over a long period of time
What can we learn about earth history and evolution from the plan...
What was so important about the T-rex discovery made by Mary Higby Schweitzer? - correct answer
She found collagen protein in the T-rex from 70 million years ago. This shows/proves that fossils form
over a long period of time
What can we learn about earth history and evolution from the plant specimens from Fossil Bowl, Idaho?
- correct answer They are not actually fossils, but charcoal remnants. We can tell the age of the
fossils, and what plants lived there, and how similar they are to plants today. This tells us little evolution
has occurred, and that the mountain range was much higher elevation.
How do unconformities demonstrate that the fossil record was produced over millions of years of Earth
history? - correct answer By proving the fossils were Cambrian and Pre-Cambrian rock. This means
that sediments in the shallow ocean were compressed, turned to the side, and new rock formed. This
would have taken 500 million years.
Explain why this creationist argument is wrong: "You cannot use uranium-to-lead radiometric dating to
tell how old a rock is because the rock might have had some lead in it when it wad first formed" - correct
answer By measuring how much uranium has decomposed into lead, you can calculate how old the
rocks are, and get the date for the crystals.
What happened to make humans have only 23 pairs of chromosomes, while chimps have 24 pairs? What
is the evidence that this occurred? - correct answer Two ape chromosomes fused together. We know
this because the telomeres on the end of the chromosome are still there.
How does the number of copies of the amylase gene in human chromosomes reflect the recent
evolution of different groups of humans? - correct answer Copy variation. Some people have more
copies, and those people eat more starch than those who have less copies.
What is Wallace's Line and why is it important evidence of evolution? - correct answer It is the barrier
between Australia and Asia that separates marsupials from placentals. It is important evidence because
it shows that species would have to evolve and adapt to a new environment.
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