What’s the phenotype for eye color of a Drosophila’s sperm?
Note: 11/12 people I asked who had this on their test got it wrong AND the teacher asked the question to the class, and answered it , on a non test day.
Similarly, how many unique chromosomes do humans have?
Note: same thing as the other question.
Fear the future, these are the world’s future doctors; you’ll have to choose between those, and Dr Sin.
Damn, I wish I had my bio book with me. I know the answer to the second one for sure, I’ve just forgotten… But I could probably find out.
Well, for the first question, I don’t know how you’re asking for phenotype when the parent’s genotypes are unknown… and for the second, isn’t it 23?
I’m afraid I don’t understand about what the first question is asking.
I think it’s interesting that fruit flies can be eyeless, though.
Well, fruit flies can have Black or Red eyes, and to my knowledge, it’s the female that decides whether offspring will have red or black eyes, so I’m guessing the sperm’s phenotype would be Bb or bb, probably Bb. (B = black, b = red.)
Of course, it’s pretty much a shot in the dark as my knowledge of Bio is very limited. And if 11/12 Bio majors couldn’t get it, I’m probably way off as well.
I think they can have white eyes too.
… I hated fruit fly breeding experiments, especially when about twenty flies start coming to from being exposed to ether while I still had them under the microscope. Eww.
At least you did labs; my AP Bio class consisted of pointless reading and busy work that I invariably didn’t do, and the rest of the class cheated on. Worst of all, I passed the AP test, and got the worst grade in the class, while everyone else failed the AP test, but got very high grades in the class. That was the first and last year that teacher taught AP Bio.
Can I spoil it? <.< (I’ve already heard this q before, and once you think about it for a minute, you kind of go “oh, duh!”) But anyway, I think it tells you how infrequently people show up for lecture if they can’t answer a question like this…
Originally posted by Sinistral
What’s the phenotype for eye color of a Drosophila’s sperm?
Please don’t take this as an insult, but how is this important?
I wanna see how many people who haven’t taken this class and more importantly haven’t been told (and had emphasized) the answers (PLURAL) by the professor to get these questions almost everyone missed. This is a demonstration of why you don’t want these people to be your doctors.
The first is obvious. Read the question litterally.
The second requires some knowledge of the nature of what the autosomal and sex chromosomes are and what it means to be haploid and diploid. No more hints.
Bleh, you suck Sin. Sperm doesn’t have eyes.
Originally posted by Sinistral
What’s the phenotype for eye color of a Drosophila’s sperm?
<img src=“http://www.rpgclassics.com/staff/tenchimaru/td.gif”> Sperm doesn’t have eyes. I hope.
Originally posted by Sinistral
Similarly, how many unique chromosomes do humans have?
<img src=“http://www.rpgclassics.com/staff/tenchimaru/td.gif”> [SPOILER]32, if I recall correctly. Might be 64, but I’m betting 32. Stupid lack of paying attention.
EDIT: Actually, you said unique. I sincerely doubt that all of them are unique, because herital information is stored in there from the parents. I’m just gonna pass on this one.[/SPOILER]
Well you’ve got 22 identical pairs of autosomes, and then one more pair of sex chromosomes which aren’t identical, so I’d say the answer to #2 is 24. My logic might be off though, I slept through most of bio (still managed to get an A but it was high school bio too) And yeah, sperm don’t have eyes. 
-Mazrim Taim
<img src=“http://www.rpgclassics.com/staff/tenchimaru/td.gif”> Oh well, at least I know where the water comes from in an aquatic solution.
Originally posted by Tenchimaru_Draconis
<img src=“http://www.rpgclassics.com/staff/tenchimaru/td.gif”> Oh well, at least I know where the water comes from in an aquatic solution.
You mean AQUEOUS??
a·que·ous ( P ) Pronunciation Key (kw-s, kw-)
adj.
Relating to, similar to, containing, or dissolved in water; watery.
Geology. Formed from matter deposited by water, as certain sedimentary rocks
as opposed to aquatic
a·quat·ic ( P ) Pronunciation Key (-kwtk, -kwt-)
adj.
Consisting of, relating to, or being in water: an aquatic environment.
Living or growing in, on, or near the water: aquatic animals and plants.
Taking place in or on the water: an aquatic sport.
I suppose technically you could use aquatic, but still 
<img src=“http://www.rpgclassics.com/staff/tenchimaru/td.gif”> It’s another “problem” Sin described. If he spelled it wrong, it’s his fault
Sperm have eyes? That’s crazy.
Originally posted by Sinistral
I wanna see how many people who haven’t taken this class and more importantly haven’t been told (and had emphasized) the answers (PLURAL) by the professor to get these questions almost everyone missed. This is a demonstration of why you don’t want these people to be your doctors.
I mean - uh… why would a doctor have to know this?
You don’t want your doctor to be this stupid, that’s why CC. I’m not saying you guys are dumb for not getting it. I was curious as to what non bio people would say and if any would get it right. These ARE premeds and bio majors we’re dealing with on my end though. Its a demonstration of the lack of critical thinking and listening skills, as you don’t even need critical thinking skills as the prof gave the answers in class.
If you’re a bio major and you don’t realize that sperm don’t have eyes, esp after the prof tells you to know it for the test (I thought he was joking … -_-), you have issues. And yes, Maz is right, there are 24 unique chromosomes. 22 , X , Y. This is very basic genetics that if you don’t get out of a college genetics class , you have to really worry. A lot.
This is from the class I tutor for the bio department. Their first midterm was a joke and most of them couldn’t handle it because the test wasn’t multiple choice, leading to a very low mean.
TD is referring to the “where does the water come from for an organic chemistry reaction that happens in aqueous acid”. Don’t feel bad if you don’t get that. Feel bad there’s a pre med that slipped through the cracks and didn’t know the answer to that after 28 weeks of ochem , 30 weeks of g chem (10 weeks of which is nothing but solution chemistry) , 10 weeks of biochemistry, high school chem and high school bio. The answer is simple: from the aqueous acid. Aqueous acid is basically very dilute acid water.
For the first question… I could have sworn I was reading that incorrectly and that it was actually supposed to be a technical question, lol. Ugh, just goes to show you how I can lose it from time to time.
Some things remind me of the “Is it okay to pur the ice bath down the drain?” situation.
