<p>Damn, just realized it was 5 AND 6 not just 6.</p>
<p>If it was dominant, would’ve showed up in one of the parents.</p>
<p>DURH.</p>
<p>Edit: Anyone remember getting "B’ with the one that showed a 5/3 DNA strand?</p>
<p>Phototaxis was like the first one… I remember that.</p>
<p>was auxin an answer for a question about the 3 plant experiments?</p>
<p>Picture of a cell in metaphase anyone?</p>
<p>Yes, auxin is the hormone.</p>
<p>And yes, of course the cell was at metaphase. The chromosomes were lined up at the metaphase plate.</p>
<p>i think planaria or something random moving towards light was phototaxis…phototropism is only plants moving towards light</p>
<p>Keasbey Nights: I distinctly remember phototaxis being e and my first answer being E then C then A. I think I got it right.</p>
<p>Oh and sorry for the flood of questions,</p>
<p>but does anyone know where starch enzymes are produced? like the mouth and intestine? or esophogas?</p>
<p>so for the plant experiments there was a question like “what is the hormone that caused the plant to move towards light?”?? i don’t remember anything where auxin was in the answer choices…</p>
<p>Black’s Law - this must be my memory playing games with me, then. I know that I got the questions right, though, so we’re all good.</p>
<p>@Josmur and aznjonny</p>
<p>75% has to be wrong. You cannot assume that its a 50-50 chance between heterozygous and homozygous Huntingtons. If we were to do this in real life, we would weight each possibility by multiplying it by the percentage of people who are heterozygous and homozygous. </p>
<p>1% of Huntington patients are homozygous, 99% are heterozygous so </p>
<p>.99<em>.5 + .01</em>1 = .505 chance he has it. CollegeBoard isn’t smart enough to think of that, so I think its still 50%.</p>
<p>So far I have 4 wrong I think. What kind of score would that be with no blanks using the E scale?</p>
<p>For the Huntington’s one I put 75% but everything I searched online says that HH dies too early to reproduce.
I also put that the human body can’t regulate PTH for the third question in that set. I’m counting it wrong for now but didn’t the question imply that the PT was removed and thus my answer would be correct? btw the first two were both decrease… the graph was flipped from what most of you are thinking. When the calcium levels were high the PTH levels were low because of negative feedback, not because low PTH causes high calcium.</p>
<p>tanakeame: I don’t see how the College Board can expect us to know the chances of a Huntington’s patient being heterozygous or homozygous.</p>
<p>Thank you, finally someone who agrees with me on PTH. It was flipped because of negative feedback.</p>
<p>Edit: In response to Keasbey</p>
<p>They don’t, but you would have to know percentages in order to add up probabilities for hetero and homozygous, so that method is flawed. Its a really bad question because it made us assume father is heterozygous.</p>
<p>tanakeame has it right, and unfortunately, collegeboard has a way of defending 50%, even if it isn’t quite right. His explanation of homozygous/heterozygous distribution makes sense.</p>
<p>(Dang, I put 75%)</p>
<p>Hmm for the Huntington problem I just used a simple Punnett Square, and got 50%…</p>
<p>Quick question for Huntington’s did one parent have the disease or were both carriers?</p>
<p>Ya, Wikipedia sums it up. I found this caption under a pedigree picture.</p>
<p>“The probability of offspring inheriting an affected gene is 50% independent of gender”</p>
<p>And about homozygous, the father would’ve had to come from a family of incest:</p>
<p>“Homozygous individuals, with two affected genes, are very rare except in large consanguineous families.”</p>
<p>only father had the disease. is it common knowledge that people who have huntington’s disease are usually heterozygous?</p>
<p>If I omitted 1 and missed 4-8, what score am I looking at?</p>