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Question
Submitted by bukysu on Thu, 2013-05-23 10:43
due on Mon, 2013-05-27 10:42
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Biology

BIOLOGY

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1. Geneticists compare DNA base sequences among organisms and from this data determine a gene’s rate of evolution. Different genes have been found to evolve at different rates. 

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- Explain why some genes might have faster rates of evolution than other genes as populations adapt to their environments, and give an example with your explanation.

 

 

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2.Species have been traditionally characterized as “primitive” and “advanced.” For example, mosses were considered to be primitive, and flowering plants advanced; crocodiles were primitive and mammals were advanced. Most biologists of today think it is incorrect to characterize any modern species as primitive.

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Determine whether or not you believe it is incorrect to refer to any modern species as primitive, and explain why.

Answer
Submitted by kim woods on Thu, 2013-05-23 14:49
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BIOLOGY

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xxxxxxx xx xxx PAGE xx MERGEFORMAT �3�

Biology

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Institutional xxxxxxxxxxxxx

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xxxxxxxxx the discovery xx fossils and xxxxx xxxxxxx in the recent xxxxx there xxx xxxx a growing xxxxxxxx in the evolution xx xxxxxx xxxxxxxx compare xxx xxxx sequences xxxxx xxxxxxxxx xxx from xxx information xxxx gather, determine x xxxx’s rate of xxxxxxxxx (Prakash, xxxxxx xxxxx refer to a xxx xx instructions capable of determining xxxx xxxxxxxxx xxx xxxxx their appearance, xxx they behave xx their xxxxx xxxxxxxxxxx xx well as xxx xxxx xxxxxxxxx xxxxxxx xxxxxxx 2002). All xxxxxx xxxxxxxxx have genes and different genes have been found xx evolve at different xxxxxx xx xxx also xxxx discovered that xxxx xxxxx tend to have faster rates xx xxxxxxxxx xxxx xxxxx genes xx populations adapt to xxxxx environment.

Discussion

xxx rate at which xxxxx evolve xx xxxxxxxxx upon xxx xxxx xxxx of xx xxxxxxxx xx species xxxxx xxxxxxxxxxx xxxxxxxx xxxxxx

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xxxxxxx xx � xxxx xx MERGEFORMAT xxxxxxxxx

xxxxxxx

xxxxxxx’s xxxxxx

xxxxxxxxxxxxx Affiliation:

xxxxxxxxxxx compare xxx base xxxxxxxxx among xxxxxxxxx xxx xxxx this data xxxxxxxxx a xxxx’x rate xx evolution. xxxxxxxxx xxxxx have been found xx xxxxxx at different xxxxxx ·

xxxxxxxxx xxx xxxxxxxxx of fossils xxx xxxxx species in the xxxxxx xxxxx there has been a xxxxxxx interest in the xxxxxxxxx of genes. xxxxxxxx compare DNA base sequences xxxxx xxxxxxxxx xxx from xxx xxxxxxxxxxx xxxx xxxxxxx determine a xxxx’s rate xx xxxxxxxxxx xxxxx xxxxx to a xxx of xxxxxxxxxxxx xxxxxxx of xxxxxxxxxxx xxxx xxxxxxxxx are like, xxxxx appearance, xxx xxxx behave in their xxxxx xxxxxxxxxxx as well as xxx they xxxxxxxxx xxxxxxx (Gould, 2002). All xxxxxx creatures xxxx genes and xxxxxxxxx genes xxxx xxxx xxxxx to xxxxxx xx xxxxxxxxx xxxxxx It xxx xxxx xxxx discovered xxxx xxxx genes xxxx xx xxxx faster rates of

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Answer
Submitted by Diamondheart on Thu, 2013-05-23 11:52
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Biology

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1. xxxxx are xxx competing hypotheses designed to xxxxxxx xxx xxxx xx xxxxxxxxxxxx change. One xx xxxxxx the punctuated xxxxxxxxxxx xxxxxxxxxxx xxxx hypothesis states that xxxxx are periods of time in which the rate of evolutionary change is xxxxx xxxxx periods xxx interspersed xxxx xxxxxxx xx rapid xxxxxxx xxxxx xxxxxx usually xxxxxxxx with xxx xxxxx xxxxxxxxxxxxx xx x xxxxxxxx during which xxxx the organism xxx not xxx development xxxxxxxxxxxxx xxxxxxxxxxx xxx xxxxxxxx if a xxxx source eventually xxxxxxx xxxxxxxxxxx xx a particular xxxxxxxx xxx xxxx xx evolutionary xxxxxx xxxx xxxxxxxx xxxxxxxx xx xxxx way, new characteristics xxxx evolve xx that xxx species can utilize x xxxxxxxxx food xxxxxx xx xxx xxxxxxx will xxxxxx extinct. xxxx xxxx trait is common xxxxxx xxx species, xxx rate of evolutionary xxxxxx xxxx slow down. xx example xx punctuate equilibrium occurred xxxxxxxx of xxxxx xxx when xxxxxxxx xxxxxxx xxxxxxxxx xxx xxxxxxxx xxxx xxxxxxx xxxxx species xxxxxxx developed

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