October 2010 - Biology E/M

Test Preparation SAT Subject Test Preparation
21

<p>yeah definitely was. random stuff about clams lol</p>

22

<p>yah…i guessed all the clam stuff
and that random experiment by miller and this other person…( i didn’t know their names AND what the experiment was about…so i couldn’t answer some questions…)
!!! :(</p>

23

<p>Molecular section was rather decent. I jst hope I didn’t commit any stupid errors, since I can’t afford it (the Bio curve is so harsh). I had some 4-6 iffy questions, hope to get at least half of them right.</p>

24

<p>When can we start discussing questions?LOL, my parents put parental controls on my computer, so when I typed in “sex- linked diseases” into google, it blocked it. XD</p>

25

<p>^ Nice dude…</p>

26

<p>■■■. I missed the Huntington’s question. I was kind of iffy about the last experiment on the M section.</p>

27

<p>what was the answer to the Huntington’s?</p>

28

<p>what is the answer to that question ??^</p>

29

<p>it’s 50% right? idk i just wiki-ed it.</p>

30

<p>oh…i think i wrote 25%…ah damn
what’s the answer to that cow and bull question?</p>

31

<p>the rancher was cheated?</p>

32

<p>same here!! but i m not sure if that’s right though…</p>

33

<p>i think it is… at least I hope so or I fail at genetics.</p>

34

<p>yeah the rancher was cheated.</p>

<p>for Huntington’s, i said 75% cuz it didn’t specify whether the father was homozygous or heterozygous.
so the two cases were Aa x aa and AA x aa, which gave 6/8 cases the son would have hungtington’s, hence 75%</p>

35

<p>but didn’t the question say that it was dominant…? or never mind.</p>

36

<p>yeah, it said autosomal dominant</p>

37

<p>no huntington disease is autosomal recessive, so it had to be homozygous if the father had it.</p>

38

<p>I stupidly thought because we had like a minute left that it was 100% bc of sex- linked traits and whatnot. idkkkk <em>bang head</em>. I’m not sure. I looked on wikipedia for Huntington’s disease, and it said offspring/anyone with it had a 50% of getting it. though I wouldn’t trust Wikipedia for anything…</p>

39

<p>nvm, mixed up the questions</p>

40

<p>“The disease is caused by an autosomal dominant mutation”</p>

<p>edit: oh lol okay</p>