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Vestigial

vestigial

refers to an organ or part (for example, the human appendix) which is greatly reduced from the original ancestral form and is no longer functional or is of reduced or altered function.

Vestigial structures provide a clue to the evolutionary history of a species because they are remnants of structures found in the ancestral species.


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Re: Vertebrates and invertebrates

... basic list for chordates is: Endostyle (becomes thyroid gland in the more derived forms) Post Anal Tail (though some have lost theirs, though a vestigial structure usually still remains) Notochord (for movement or other functions in other chordates) Pharyngeal slits (become a variety of other ...

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by Chroma
Fri Dec 11, 2009 9:26 am
 
Forum: Zoology Discussion
Topic: Vertebrates and invertebrates
Replies: 11
Views: 2202

Rate of selection

... experiment is a pretty standard one - basically, we took fruit flies - normal (wild type, dominant), mutant (ebony, recessive) and another mutant (vestigial wing, recessive). There were three control populations for the three different types of flies, starting off with 20 pregnant female flies ...

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by penguinfan
Sun Nov 22, 2009 8:48 pm
 
Forum: Evolution
Topic: Rate of selection
Replies: 1
Views: 79

Gene Mapping Question

... work backwards, so I'd appreciate any type of help. Esmé has her Bio199 project planned. She will determine the map distance between the tubby and vestigial genes in Drosophila. tb+ normal, long body tb tubby, short body vg+ big wings vg small wings She began by crossing true-breeding, homozygous ...

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by greenpak07
Sat Nov 29, 2008 11:48 pm
 
Forum: Genetics
Topic: Gene Mapping Question
Replies: 1
Views: 627

"nothing in biology makes sence except in light of evolution

I'd be careful on vestigial organs - the logic there is the same one behind Intelligent Design. ID - "We don't understand how this could have evolved, so it didn't." VO - "We can't figure out what this structure is doing, ...

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by Darby
Thu May 01, 2008 11:55 am
 
Forum: Human Biology
Topic: "nothing in biology makes sence except in light of evolution
Replies: 3
Views: 866

"nothing in biology makes sence except in light of evolution

Here's two you can expand on organisms with similar traits are related vestigial organs

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by mith
Wed Apr 30, 2008 10:55 pm
 
Forum: Human Biology
Topic: "nothing in biology makes sence except in light of evolution
Replies: 3
Views: 866
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