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A2 Biology | Post your doubts here

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we can also talk about some alleles switching on at certain temperatures right? like coat color in Himalayan rabbits!
thats due to a natural selection... e.g. the selection pressure is low temperature, the rabbits die but some of them adapt new features (by mutation) and survive
 
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oh yeahh same here!!! its so much of writing!! just take a break for 15-30 secs and also a deep breath :p
And also, how often do you write more than the given space? For me, quite often. And most of the time, the first two sentences I write are just BS :(
 
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And also, how often do you write more than the given space? For me, quite often. And most of the time, the first two sentences I write are just BS :(

yeah sometimes, just look at the mark allocation and write that many number of points.
 
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can anybody explain wot is vertical transmission n horizontal transmission in natural selection?
i cant find it in da buk buh its dere in markscheme :confused:
 
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thats due to a natural selection... e.g. the selection pressure is low temperature, the rabbits die but some of them adapt new features (by mutation) and survive
no but this type of phenotype change is due to environment also.. so it is linked with environment affecting phenotype question.
 
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:eek:

i have three 4 subjects...maths phys chem bio...
i can say i love maths / physics / chemistry but i can never say i love bio :giggle:
yyyyyyyyyyyyy:(...i have 3 subjects...bio ,chem(with AS level) and phy...
but among them bio is the subject which i love the most..
 
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ohh den its very difficult for u to cope up wit it...isnt it?
nah ..alhumdulilah its all ok by Allah's grace..
the thing is i really love maths n chem..as well as physics...so it's like i need to give less time to maths ...then chem also not that much..so yeah kinda able to cope up with...
 
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