EvC Forum: Beneficial Mutations

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Topic: Beneficial Mutations

crashfrog

Member (Idle past 1497 days)

Posts: 19762

From: Silver Spring, MD

Joined: 03-20-2003

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Message 11 of 33 (184217)
02-09-2005 7:36 PM

Reply to: Message 9 by daaaaaBEAR
02-09-2005 7:17 PM

Shouldn't there be some modern examples needed of some kind of mutation that would lead to evidence in transitional species?

Mutations don't produce transitional species. Mutations produce variation within the individuals of a species. Of course, because all species are in constant change, all species are transitional species.

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	Message 9 by daaaaaBEAR, posted 02-09-2005 7:17 PM		daaaaaBEAR has not replied

crashfrog

Member (Idle past 1497 days)

Posts: 19762

From: Silver Spring, MD

Joined: 03-20-2003

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Message 19 of 33 (184397)
02-10-2005 11:06 AM

Reply to: Message 16 by daaaaaBEAR
02-10-2005 12:09 AM

Re: follow jar's suggestion, and you shall find...

Crashfrog says that every species is in a state of transition. If humans are are in transition then how does resistance to disease make us mutate into a different species?

It doesn't. Reproductive isolation leads to new species, not mutation.

That article gives no examples of beneficial mutation that would lend to whole new species.

Because that's not how new species form. New species form through reproductive isolation. When two populations are separated from each other, and are constantly changing as all populations do, the lack of gene flow between them means that genetic incompatibility develops. They change in different genetic "directions" because the genetic communication (gene flow) between them is interrupted. As a result, they lose the ability to interbreed over time. That's how new species form.

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	Message 16 by daaaaaBEAR, posted 02-10-2005 12:09 AM		daaaaaBEAR has not replied

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	Message 20 by AdminNosy, posted 02-10-2005 11:08 AM		crashfrog has replied

crashfrog

Member (Idle past 1497 days)

Posts: 19762

From: Silver Spring, MD

Joined: 03-20-2003

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Message 21 of 33 (184403)
02-10-2005 11:14 AM

Reply to: Message 20 by AdminNosy
02-10-2005 11:08 AM

Re: Topic

Just trying to narrow the topic by removing the conflation between beneficial mutations and speciation events.

Point taken, tho.

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	Message 20 by AdminNosy, posted 02-10-2005 11:08 AM		AdminNosy has not replied

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