# The Rock Pocket Mouse: A Model for Natural Selection

**URL:** <https://discourse.peacefulscience.org/t/the-rock-pocket-mouse-a-model-for-natural-selection/8236>\
**Category:** Side Conversation\
**Tags:** Science\
**Created:** [October 23, 2019, 3:49pm UTC](https://discourse.peacefulscience.org/t/the-rock-pocket-mouse-a-model-for-natural-selection/8236 "2019-10-23T15:49:43Z")\
**Posts on this page:** 1\
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**Author:** ![colewd](https://avatars.discourse-cdn.com/v4/letter/c/ecd19e/32.png) [@colewd](https://discourse.peacefulscience.org/u/colewd)\
**Post date:** [October 24, 2019, 4:13pm UTC](https://discourse.peacefulscience.org/t/the-rock-pocket-mouse-a-model-for-natural-selection/8236/2 "2019-10-24T16:13:27Z")

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> [@Design and Nested Hierarchies](https://discourse.peacefulscience.org/t/design-and-nested-hierarchies/8066/496):
>
> I started a thread on that very subject. Perhaps you could make some comments over there.

Many genes have very little impact like the ones you describing with genes that drive color. The purifying selection could be simply a change in the sequence is fatal due to its internal function.

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