Your Thoughts On Biology 2010 Exam 2

[stonecold]

polygenic. the groups werent discrete and showed continous variation.

I'm so fkn lazy.  i got so used to those questions, that I would just look at the graph and then select polygenic.  bad habit, could esily be tricked...

with the redness of the plants, was it B, the two plants would be expected to have the same colour?

Also, plant height, option B was selected against?

I am just worried about the X-lined recessive question.

Was the answer B, whoever it was must be heterozygous?

Last two MC questions I got convergent evolution, and then A, due to the cell wall, which made it harder and more likely to fossilise...

[bar0029]

nooo i didnt say that one because, they wouldnt have the same colour
thwey used the word WOULD as oppose to COULD
and phenotype = genotype x environment

so it was the one that said
blah blah blah and blah blah COULD produce offspring with the darkest colour

[stonecold]

nooo i didnt say that one because, they wouldnt have the same colour
thwey used the word WOULD as oppose to COULD
and phenotype = genotype x environment

so it was the one that said
blah blah blah and blah blah COULD produce offspring with the darkest colour

didn't it say reasonable to expect in the stem though?

[bar0029]

possibly...

[stonecold]

nooo i didnt say that one because, they wouldnt have the same colour
thwey used the word WOULD as oppose to COULD
and phenotype = genotype x environment

so it was the one that said
blah blah blah and blah blah COULD produce offspring with the darkest colour

yeah, sorry but that is incorrect, as R1+R1+R2-R2- and R1-R1-R2+R2+ cannot produce the darkest plant, as alleles need to come from each parent sorry...

[happycat]

I have no idea, I never really paid much attention to the mechanics of scaling and scores. Biology has a bit of a reputation for being pedantic (like Psych) so I'd imagine it's lower than people expect.

Yeah, having done bio two years ago I did think that it was that way and as for psych which I'm doing now gosh the teacher says how you got to be so precise in defs ect

[bar0029]

yeah and if they come from each parent then youll end up with R+R+R+R+
can't you :S?

[stonecold]

yeah and if they come from each parent then youll end up with R+R+R+R+
can't you :S?

nah, you need an r1 from each parent, and an r2 from each parent...

[Stroodle]

polygenic. the groups werent discrete and showed continous variation.

I'm so fkn lazy.  i got so used to those questions, that I would just look at the graph and then select polygenic.  bad habit, could esily be tricked...

with the redness of the plants, was it B, the two plants would be expected to have the same colour?

Also, plant height, option B was selected against?

I am just worried about the X-lined recessive question.

Was the answer B, whoever it was must be heterozygous?

Last two MC questions I got convergent evolution, and then A, due to the cell wall, which made it harder and more likely to fossilise...

I chose all the same as you (can't really remember the x-linked question though - wasn't it something about how the mum must have been hetero?). Was a little worried bout the cell wall question, cause the wording seemed to make out that they both have cell walls, but the diagram showed that only one of them did. All the other options seemed clearly incorrect to me though.

[bar0029]

fml i have lost two marks thus far grr grr grr ):

[stonecold]

polygenic. the groups werent discrete and showed continous variation.

I'm so fkn lazy.  i got so used to those questions, that I would just look at the graph and then select polygenic.  bad habit, could esily be tricked...

with the redness of the plants, was it B, the two plants would be expected to have the same colour?

Also, plant height, option B was selected against?

I am just worried about the X-lined recessive question.

Was the answer B, whoever it was must be heterozygous?

Last two MC questions I got convergent evolution, and then A, due to the cell wall, which made it harder and more likely to fossilise...

I chose all the same as you (can't really remember the x-linked question though - wasn't it something about how the mum must have been hetero?). Was a little worried bout the cell wall question, cause the wording seemed to make out that they both have cell walls, but the diagram showed that only one of them did. All the other options seemed clearly incorrect to me though.

yeah, mother was hetero.

Only other one I can think of is the father had a mutation in the R' allele if I remember correctly yeah?  whichever one was different and could not have come from the mother...?

[stonecold]

fml i have lost two marks thus far grr grr grr ):

dw, that was a massive trick.  i nearly fell for it too...

[Stroodle]

polygenic. the groups werent discrete and showed continous variation.

I'm so fkn lazy.  i got so used to those questions, that I would just look at the graph and then select polygenic.  bad habit, could esily be tricked...

with the redness of the plants, was it B, the two plants would be expected to have the same colour?

Also, plant height, option B was selected against?

I am just worried about the X-lined recessive question.

Was the answer B, whoever it was must be heterozygous?

Last two MC questions I got convergent evolution, and then A, due to the cell wall, which made it harder and more likely to fossilise...

I chose all the same as you (can't really remember the x-linked question though - wasn't it something about how the mum must have been hetero?). Was a little worried bout the cell wall question, cause the wording seemed to make out that they both have cell walls, but the diagram showed that only one of them did. All the other options seemed clearly incorrect to me though.

yeah, mother was hetero.

Only other one I can think of is the father had a mutation in the R' allele if I remember correctly yeah?  whichever one was different and could not have come from the mother...?

Yep, I chose that one too

Oh and for the plasmid question I think I chose that the hok allele, or whatever it was called, would keep transcribing the mRNA.

[stonecold]

polygenic. the groups werent discrete and showed continous variation.

I'm so fkn lazy.  i got so used to those questions, that I would just look at the graph and then select polygenic.  bad habit, could esily be tricked...

with the redness of the plants, was it B, the two plants would be expected to have the same colour?

Also, plant height, option B was selected against?

I am just worried about the X-lined recessive question.

Was the answer B, whoever it was must be heterozygous?

Last two MC questions I got convergent evolution, and then A, due to the cell wall, which made it harder and more likely to fossilise...

I chose all the same as you (can't really remember the x-linked question though - wasn't it something about how the mum must have been hetero?). Was a little worried bout the cell wall question, cause the wording seemed to make out that they both have cell walls, but the diagram showed that only one of them did. All the other options seemed clearly incorrect to me though.

yeah, mother was hetero.

Only other one I can think of is the father had a mutation in the R' allele if I remember correctly yeah?  whichever one was different and could not have come from the mother...?

Yep, I chose that one too

Oh and for the plasmid question I think I chose that the hok allele, or whatever it was called, would keep transcribing the mRNA.

Option A yeah, the toxin would be continued to be produced if that other mRNA was absent?

[bar0029]

yeah thats what i said