.

[kenhung123]

reproduction, asexual same thing as long as you didn't say SEXUAL reproduction

[TheJosh]

damn... why could'nt they get us to explain meiosis instead...

yeah that would've been good

learnt meiosis on sunday

[silva]

i dont understand how the answer to the "Image D" qs is at Point W
its obviously anaphase, but the ENTIRE diagram is of the mitosis process, the tiny little time at about 10'o clock on the circle is cytokinesis im pretty sure?
i thought it was point R judging by that because its third in the sequence of P Q then R?

[LFTM]

i dont understand how the answer to the "Image D" qs is at Point W
its obviously anaphase, but the ENTIRE diagram is of the mitosis process, the tiny little time at about 10'o clock on the circle is cytokinesis im pretty sure?
i thought it was point R judging by that because its third in the sequence of P Q then R?

Doesnt the diagram include G1, Sphase, G2 then theres the mitosis bit and the really tiny bit is cytokinesis??

[silva]

i dont understand how the answer to the "Image D" qs is at Point W
its obviously anaphase, but the ENTIRE diagram is of the mitosis process, the tiny little time at about 10'o clock on the circle is cytokinesis im pretty sure?
i thought it was point R judging by that because its third in the sequence of P Q then R?

Doesnt the diagram include G1, Sphase, G2 then theres the mitosis bit and the really tiny bit is cytokinesis??

nah i really doubt it because if you remeber diagrams of the whole cell cycle, mitosis is a very small part, not the size of the section your referring to
if it was of the entire cell cycle i think mitosis would best represent the tiny bit


actually looking at it again..i think what your saying is right lol fuuuuuuuuck

[LFTM]

Why did they put "Gap 1" in one of the sections for btw?

[Heiby]

well i failed that exam.

[mmmmm]

So, i won't get a mark for putting "the way cells divide and multiply in bacterias"? :/

[jake]

wasn't the butterfly q A since they wanted to prevent extinction and they outlined that the butterfly populations where scattered thus no gene flow. So by putting them together, it allows for greater genetic diversity and therefore allow gene flow and prevent extinction.


also 23 was A because natural selection is unlikely to change the allele frequencies so dramatically in 3 generations. It takes much longer and it clearly emphasizes that a 'small' therefore genetic drift acted upon the population hence it was A not B.

Also 25 was B not D.

I got A also... and agree fully with this explanation... by placing all the butterflies in a single location where they are able to interbreed, the gene pool of this population would be much larger than the gene pools of the small isolated populations and hence greater genetic and phenotypic variation will result. this increased phenotypic variation will give the species of butterfly a better chance of survival

[fdsfsgdfgdf]

I notice reading the question now it says phenotypic diff. Ah well maybe we'll get one mark.

isnt phenotype the expression of a gene

[kenhung123]

I think B is correct. The question states something like butterflies were laying eggs everywhere on those trees in 1957 people thought they were extinct and in 1978 they reappeared again. This suggested that by laying eggs everywhere they can survive. Hence, planting more of those trees for them to spread their eggs and increase likelihood to survive.

[kenhung123]

I notice reading the question now it says phenotypic diff. Ah well maybe we'll get one mark.

isnt phenotype the expression of a gene

Phenotype is the result of the expression of the genotype yes. But I am pretty sure the question is looking for phenotype differences. You should have said one guy would have pigment in hair and skin and the other wouldn't

[qshyrn]

I think B is correct. The question states something like butterflies were laying eggs everywhere on those trees in 1957 people thought they were extinct and in 1978 they reappeared again. This suggested that by laying eggs everywhere they can survive. Hence, planting more of those trees for them to spread their eggs and increase likelihood to survive.

sorry but i don't think that's what they meant. if they where laying eggs everywhere on those trees then that suggests that in 1957 there was a lot of those trees and despite this they still got extinct. hence trees where not the problem

why dont we all just get over q14 for now and wait till someone gets the assessment report and tells us what the answer is! lol
this debate can go on forevvvvvvvveeeeeeeeeeeeeeeeeeeerrrrrrrrrrrrrrr

[shinny]

I think B is correct. The question states something like butterflies were laying eggs everywhere on those trees in 1957 people thought they were extinct and in 1978 they reappeared again. This suggested that by laying eggs everywhere they can survive. Hence, planting more of those trees for them to spread their eggs and increase likelihood to survive.

sorry but i don't think that's what they meant. if they where laying eggs everywhere on those trees then that suggests that in 1957 there was a lot of those trees and despite this they still got extinct. hence trees where not the problem

why dont we all just get over q14 for now and wait till someone gets the assessment report and tells us what the answer is! lol
this debate can go on forevvvvvvvveeeeeeeeeeeeeeeeeeeerrrrrrrrrrrrrrr

Exactly. I gave up when I realised I could produce counter-arguments for basically every counter-argument I had. It's going to go in circles because each side has legit points depending on their interpretation of the scenario.

[simpak]

Oh my god we are not arguing about the Eltham butterfly populations again D: