<p>Yes, but mutation isn’t always in an isolated population.</p>
<p>I cranked out the good ol’ Campbell biology textbook for y’all. (This is taken from the section about Hardy Weinberg and stuff)
-“Gene flow: the transfer of alleles between populations, can alter allele frequencies” </p>
<p>-“By introducing or removing genes from chromosomes or by changing ONE ALLELE into another, MUTATIONS modify the gene pool”</p>
<p>-Genetic drift: “tends to reduce genetic variation through such losses of alleles from the gene pool”
–Bottleneck effect: sudden change in enviro. such as fire/flood that drastically reduces population size
–Founder: when a few individuals become ISOLATED from a larger population, this smaller group may establish a NEW population, whose gene pool is NOT reflective of the source population</p>
<p>I don’t know what question we’re referring to, but mutations cause genetic variation/changes in gene pool :)</p>
<p>Im just going by what the Barron’s book said. And it doesn’t ask if mutation always occurs in an isolated population. I thought it was the best choice.</p>
<p>Can someone restate the question? (genetic drift debate)</p>
<p>What about the rat and gallbladder? Did we decide on motor or sensory?</p>
<p>And did we settle on green or violet light or biggest change?</p>
<p>So, genetic drift?</p>
<p>The question was “a new trait arises in an isolated population”. It’s mutation, according to Campbell’s and Barron’s.</p>
<p>Motor and green.
I put violet, but ultraviolet light is very close to violet, so I think violet is wrong.</p>
<p>Pigment question, I put blue light, the wavelength plants absorb the most</p>
<p>It specifically said “isolated.”</p>
<p>Its green light because plants absorbed that the least. The other wavelenghts were all close to each other and wouldnt cause drastic change</p>
<p>@Dj, we decided it was motor
Princeton Review: “Motor neurons: these neurons are involved in sending information from the CNS (central nervous system) to the organs of the body, such as muscles and glands.”</p>
<p>what did you guys put for the random disapperance of a gene ? i put gene flow but i have a feeling it is wrong.
and where are the hormones synthesized? bcuz the hypothalumus controls it so i put thalamus, im kinda unsure :S</p>
<p>what was the answer to the question about the function of lipids (or phospholipids) in the cell membrane?</p>
<p>Yes, motor! Thanks to the power of guessing, my test becomes better and better…</p>
<p>Off-topic: did anyone know that conversate was a word? I know converse and conversation were, but lol wow.</p>
<p>So here’s another good question from E: Which brood with the selected genotype will contain the most surviving offspring per parent? Was it 5? That’s what I thought, but half think it was a trick question and I should have chosen the one with the least number or something.</p>
<p>It was genetic drift.
Hypothalamus. (crap that’s 3.)
And insoluble in water.</p>
<p>Conversate is a word…
That’s just wrong…</p>
<p>That one with random was genetic drift.</p>
<p>Hypothalamus, absolutely.</p>
<p>@biscuit Was the lipid one on M? I don’t think I had it.</p>
<p>@Djumper, if 4 was an option, I think I put that - but if not, I put five. I remember in the very last row were the percentage of recaptures the 2nd time around, and 4 had the highest</p>
<p>Do you remember the question about the difference between fish and mammals? I think I put counter current flow</p>
<p>^ Yep I put counter current exchange too. I’m pretty sure it’s right.</p>