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*Biology Paper 5 tips*

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It's not really monohybrid..the question says that the without tail allele is heterozygous..and they are male and female..so any two heterozygotes gives the ratio 9:3:3:1.
My friend correct me if im wrong, but monohybrid means pasing one gene (with or without tail) whereas dihybrid is passing 2 genes( like wing lenght and body colour for that dtrosphila fly stuff) right ? :(

EIDT- and since they are not sex linked gender does not matter right ?
 
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My friend correct me if im wrong, but monohybrid means pasing one gene (with or without tail) whereas dihybrid is passing 2 genes( like wing lenght and body colour for that dtrosphila fly stuff) right ? :(

EIDT- and since they are not sex linked gender does not matter right ?

yeah.... but they did this cross to see if the tail is sex-linked or not..
 
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the question does not say that :S bah forget it :D hopefully we wont get this question for my exam tmrow good luck all and good luck knowitall10 your a really good person for these passing notes :)

I like how you think :p
Thanks a lot:) InshAllah the exam will rock with epicness tmw..(y) good luck to you too!!
 
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(n-1) is the general formula where n is the number of samples/ observations in your data set. So if your number of samples is 4, your degrees of freedom will be (4-1)=3

M/J/09/05 Q3 (iv)
can you pls do this for me?
 
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How do you make a histogram? :/
May/June/07 Q1
could anyone please post a picture or something .. Please!
 
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can anyone please tell me how to draw error bars in detail??
and what does overlapping of error mean?? :(
i am too tense for tomorrow all of my bio papers went great i don't want to screw in p5.....
 
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I know this is a stupid question but in May june Q2 .. we do the experiment seperately for seeds and the invertebrates? :p
 
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It's not really monohybrid..the question says that the without tail allele is heterozygous..and they are male and female..so any two heterozygotes gives the ratio 9:3:3:1.

I don't get it :( In the question they said the cats are heterozygous, not the allele. I did it as a monohybrid cross and I got the same answer. Would I be penalised in the exam? And can you please explain how do I know when to understand that the allele is heterozygous? I mean, they didn't say anything about the tail presence being controlled by more than one gene, so I understood from it that it would be a monohybrid cross as there are two alleles for the single gene :(
 
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I don't get it :( In the question they said the cats are heterozygous, not the allele. I did it as a monohybrid cross and I got the same answer. Would I be penalised in the exam? And can you please explain how do I know when to understand that the allele is heterozygous? I mean, they didn't say anything about the tail presence being controlled by more than one gene, so I understood from it that it would be a monohybrid cross as there are two alleles for the single gene :(

Yeah..i'm fighting with this dihybrid and monohybrid confusion myself....InshAllah I'll contact my teacher and ask him to explain..i'll post the explanation soon inshAllah..
 
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I don't get it :( In the question they said the cats are heterozygous, not the allele. I did it as a monohybrid cross and I got the same answer. Would I be penalised in the exam? And can you please explain how do I know when to understand that the allele is heterozygous? I mean, they didn't say anything about the tail presence being controlled by more than one gene, so I understood from it that it would be a monohybrid cross as there are two alleles for the single gene :(
which paper is this plz?
 
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