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Hominin Diversity, Invertebrate Diversity, Evolutionary History, and Origins of Species

Question 1

In which we explore hominin diversity.

A. Explain the evidence that suggests hominins did not evolve in a straight line leading directly to our species.

Question 2

In which we explore invertebrate diversity.

A. Explain how a hydrostatic skeleton helps an animal keep its shape and move.

Question 3

In which we discuss tracing evolutionary history.

A. Describe how radiometric dating and the relative position of a fossil within a rock strata are used to determine the age of rocks and thus the age of the fossil.

Question 4

In which we discuss tracing the origins of species.

A. Describe the circumstances that led to the adaptive radiation of the Galapogos finches.

I need brief answers per question. They do not need variety information. 3 or 4 sentences are fine.

Solution Preview

1) Some evidence that evolution of hominins was not linear include the development of the central nervous system and cranial morphology. There is evidence that certain primates and current humans shared a similar ancestor, of which divergent evolution created a slightly different morphology in early humans' brains and skulls than other species that diverged at that point. These early humans then further evolved into current day humans.

2) Hydrostatic skeletons are ...

Solution Summary

The expert explains the evidence that suggests hominins did not evolve in a straight line leading directly to our species.

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