# Lents and Hunt: Behe And The Polar Bear's Fat

**URL:** <https://discourse.peacefulscience.org/t/lents-and-hunt-behe-and-the-polar-bears-fat/4473>\
**Category:** Office Hours\
**Tags:** Science\
**Created:** [February 12, 2019, 4:44pm UTC](https://discourse.peacefulscience.org/t/lents-and-hunt-behe-and-the-polar-bears-fat/4473 "2019-02-12T16:44:05Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![swamidass](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.peacefulscience.org/swamidass/32/3_2.png) [@swamidass](https://discourse.peacefulscience.org/u/swamidass)\
**Post date:** [February 15, 2019, 5:52am UTC](https://discourse.peacefulscience.org/t/lents-and-hunt-behe-and-the-polar-bears-fat/4473/29 "2019-02-15T05:52:13Z")

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> [@T.j\_Runyon](#):
>
> But then I think of this paper and others like it that show loss of function mutations can cause significant change. Like loss of limbs:

Good point @T.j_Runyon. We included a line on this in the review too. It does not seem major evolutionary changes, such as the rise of whales, require many new genes. Ohno’s 2R hypothesis helps a great deal, because that shows how so many species have an excess of genes to lose.

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