Edexcel 6BIO2 ~ 3rd June 2013 ~ AS Biology

Unit 1 was heaven sent, some how got amazing marks!!

I have a feeling unit 2 is going to be hell on paper. Not looking forward to it at all


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I did the Jan 2013 Unit 1 in my mock ups, got 77/80. On the actual June 2013 paper than I sat for, however, I probably won't get more than 65/80. And the boundaries are just getting higher all the time. :'(

I only got a B in Unit 1, I really do hope that this paper is going to be relatively easy!
Trying to balance out studying for Chemistry and Biology is too damn hard!

85% on specimen paper, though it was quite specific :/

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68 marks, impressive

It was very different, and some of the points were just weird.

N.B: What did you get in January for unit 1 may i ask?

im actually scared to solve the speciman :/ so might leave it out.

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68 marks, impressive

It was very different, and some of the points were just weird.

N.B: What did you get in January for unit 1 may i ask?

No, definitely try it. It's good practice and its probably the only paper you haven't done, right?

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Crossing over and independent assortment are two processes which greatly increases the genetic variety in gametes formed by meiosis.

Crossing over: Happens during meiosis 1. basically large enzymes cut off bits of maternal and paternal chromosomes and swap them around. Of course this only happens between homologous pairs of chromosomes, so that they still have the same genes, just different combinations of alleles. The points where the chromosomes break off are called chiasmata.
This leads to variation in two ways: 1. the exchange of genetic material in itself leads to added genetic variation. 2. errors in this process lead to mutations which introduce new alleles into the gene pool of a particular species.

Independent assortment: So basically you have TWO sets of chromosomes, 23 from your mom and 23 from your dad (46 in total). Now when meiosis takes place, the gametes formed have only ONE set of chromosomes (23 in total). During meiosis the maternal and paternal chromosomes are distributed into the gametes completely at random. This means that each gamete may contain any number from 0-23 of either your maternal or paternal chromosomes. So no two gametes are identical.

The independent assortment bit is really difficult to explain, I hope it helped though.

Thanks dude I've been working quite hard aha hopefully everything will be cool Monday *crosses fingers*;

Yeah sure I got a B in Jan and resat it a few days ago.

I wish you the best of luck in your studies dude, what did you get in Jan and for the specimen?

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im quite behind on biology i have only done 2 past papers, hoping to do 2-3 more tonighy including learning all the practicals.
have been focusing on chemistry and Fmaths, i really do hate biology :/

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After u do all the Edexcel past papers what do you do ?

Do you use papers pre 2008 ?

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Can somebody post a link for this specimen paper please

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Thanks bro! I hope we all smash Mondays exam and and finally take a break from biology (still got chemistry and physics to go)

I did great in jan 79 marks, 120UMS

The specimen i got 54 marks, Not to bad, considering i haven't exactly mimicked the markscheme yet, hopefully by the end of this week, that would be sorted out