Pick one of the following genetic variations that have occurred in human evolution. Then pick one of the three causes of genetic variation (meiosis, replication errors, environmental impacts) and make a claim as to why you think that particular cause of genetic variation was the cause of the change. Use supporting research and/or data to support your claim.

- Smaller bodies
- Smaller brains
- Smaller teeth and jaws

Question

18-07-2022
Biology

contestada

Pick one of the following genetic variations that have occurred in human evolution. Then pick one of the three causes of genetic variation (meiosis, replication errors, environmental impacts) and make a claim as to why you think that particular cause of genetic variation was the cause of the change. Use supporting research and/or data to support your claim.

- Smaller bodies
- Smaller brains
- Smaller teeth and jaws

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luisvaschetto luisvaschetto · Answer 1 · 2022-07-19T17:18:54+02:00

Smaller teeth and jaws are due to genetic variation, which occurred by mutations (errors in DNA replication) and were selected to fill a suitable niche.

What is evolution?

Evolution is the mechanism of change of one species to adapt given environment, whereas mutations are the raw material for evolution.

In this regard, scientific evidence supports the fact that jaws evolved to become shorter in humans and thus adapt to a pastoral lifestyle.

In conclusion, smaller teeth and jaws emerged by mutations and were selected to fill a suitable niche.

Learn more about human evolution here:

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