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IAL Biology Unit 5: How was it?

How was it?

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pouloukos

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Hey. In question 6, about the hours of darkness and sunlight, the answer to the multiple choice question was the first box ?
 
Agent Z

Agent Z

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aniekan said:
No it's 25%. If in doubt MS will justify it :)
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I remember reading the question as A1AT DEFICIENCY (NOT COPD DEVELOPMENT) which was 75%. PiMM is normal levels of A1AT protein and Z & S are allelic variants that produce less A1AT therefore any offspring with S or Z in their genotype will have A1AT DEFICIENCY, but whether it causes severe COPD or not is something else, then it would have been 25%. So, in short, on of us interpreted the question wrong. I'll just leave this here.:)
 
aniekan

aniekan

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Agent Z said:
I remember reading the question as A1AT DEFICIENCY (NOT COPD DEVELOPMENT) which was 75%. PiMM is normal levels of A1AT protein and Z & S are allelic variants that produce less A1AT therefore any offspring with S or Z in their genotype will have A1AT DEFICIENCY, but whether it causes severe COPD or not is something else, then it would have been 25%. So, in short, on of us interpreted the question wrong. I'll just leave this here.:)
Click to expand...


Like I said the mark scheme knows BETTER. Goodluck
 
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