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Bio paper/42

What would be the minimum marks required for A in bio/42 ?


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why should normal with recession the person with NF has to be recessive, coz' NF is caused due to recessive conditions :/
it was written in the question whenever the infected parent mated with normal 50 % offsprings would be infected one :/
so allele must be dominant for infection :S
Dont tell me I am wrong please :( I had already done a lot of mess with my paper :(
 
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Hope so :/

not gonna expect anything from CIE now :D
There were many questions which i guessed !
Eg . tell me what you wrote for:
1- water potential definition
2- why CC has more muscle mass
3 - role of dna in chloroplast
4-processes for last question in section A
5-why infant has higher BAT
and many more !
 
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I did the same thing !
and all my class mates done the same , it said at least 50% which shows its caused by dominant allele ,
inshallah we are all right :)
dude we can think this alternatively also :/
if we think that 50% are normal so 50% are infected hence
it is possible either dominant was allele for infection or allele for normal :S
though I did the same as you described :p
 
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it was written in the question whenever the infected parent mated with normal 50 % offsprings would be infected one :/
so allele must be dominant for infection :S
Dont tell me I am wrong please :( I had already done a lot of mess with my paper :(
w8 the ques said when ever the person is infected he is recessive, so that means the normal is dominant. So the infected person is "nn" the unaffected has to be "Nn". only the we will have 50% offsprinf with NF and other 50% normal (actually carriers)
 
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dude we can think this alternatively also :/
if we think that 50% are normal so 50% are infected hence
it is possible either dominant was allele for infection or allele for normal :S
though I did the same as you described :p
we cannot do either way cz' they specifically mention that NF has to be recessive :/
 
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using Nn as affected and nn as normal will give 50% chance
while Nn for normal and nn for affected will also give 50% chance
shouldnt both be correct?
 
Messages
306
Reaction score
278
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There were many questions which i guessed !
Eg . tell me what you wrote for:
1- water potential definition
2- why CC has more muscle mass
3 - role of dna in chloroplast
4-processes for last question in section A
5-why infant has higher BAT
and many more !
1.concentration of water molecules in a solution, like in blood :D
2. The mutation cause a change in base which now coded for a stop codon hence different primary structure smaller polypeptide chain so smaller mass of protein produces.
3.DNA contains gene for proteins, specific to only chloroplast. as chloroplast also conatin 70S ribosome so translation is done in the chloroplast for such proteins. But I named protein as example RUBISCO :D
4.I didn't attemt did Q9
5. as infants metabolic activities are less they donot produce enough heat by other processes, so BAT is there as BAT release heat energy by synthesis of ATP.
 
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