F215 - Revision thread 13th June 2011

type in f215 jan 2011 mark scheme in google - there's a PDF link - i found it yesterday using that

what are the chances of module 4 coming up...i cba with it.

what have you all got for an example of succession. do we just learn the one in the text book? (the sand dune one)

literally 100%

In the heinemann book on 2.1 spread 8, in the process of prophase 1 what does it mean by
'each pair consists of one maternal and one paternal chromosome'

From the diagram it seems that each consists of either two maternal or two paternal chromosome, I don't understand!
Please help!

cant seem to find it. can you pass me the exact link please?

what about the human galapogas crap....

cant seem to find it. can you pass me the exact link please?

Each HOMOLOGOUS PAIR or BIVALENT has a maternal and paternal chromosome. That diagram has included two homologous pairs.

what about the human galapogas crap....

Assumptions:

1. Very large population
2. Random mating between individuals
3. No selection
4. No random mutation
5. No genetic drift / migration

And basically, we assume that there are only 2 alleles, and use the formula

p^2 + q^2 + 2pq = 1,

where p = dominant allele and q = recessive allele

so basically, p^2 = homozygous dominant
q^2 = homozygous recessive
and 2pq = heterozygous

and we use the whole hardy-weinberg equation to work out the percentage of the population with the dominant allele, or recessive allele, or the percentage who are homozygous dominant or recessive, etc.

what do people think the two 8 markers will be? (theres usually two 8 markers isnt there)?

highly important

I don't know susan

But I thought homologous meant the same thing?? I am so confused

I have a big feeling it's either going to be on cloning or actin and myosin

I have a big feeling it's either going to be on cloning or actin and myosin