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    (Original post by chuck111)
    who gets the cookie lol like 3 people replied :P
    well i'm on a diet for prom lol so i'd better not. altho i havent had my tea yet.... hmmmmmmmmm
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    So whos up for it? .
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    (Original post by skatealexia)
    So whos up for it? .
    Err...sure :jive:
    I love this smiley
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    what is meant by progeny testing? And can someone scroll down the points for artificial selection of modern dairy cows please?
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    (Original post by Mit321)
    Habituation- remember getting into the habit to help. Learning to ignore a stimulus because of repeated exposure gives neither reward not punishment.

    Classical Conditioning- remember Pavlov and the dog. Food= Dog salivating. Food+ Bell+ Salivating. After many times just Bell= Salivating. It has become a conditioned response

    Operant Conditioning- Trial and Error Learning, e.g. a monkey learns to press a button because he gets a treat/ learns not to press it because it electrocutes him.

    Latent Learning- exploring and remembering stuff incase it comes in handy.

    Insight Learning- Logic. Human and some primates have it. Thinking and Reasoning e.g. Monkey building up boxes to get to banana's.
    http://www.isms.org.uk/images/cc_cookies.jpg :jumphug:

    EDIT: NEW RULES, SHARE EM lol
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    (Original post by noodlecookie)
    http://www.isms.org.uk/images/cc_cookies.jpg :jumphug:
    i think i just jizzed my pants :P

    i'm up for MSN if other peoples are

    or if people have blackberrys send me your PIN so i can chat

    yeaaaaaaaaaaaaaaaah
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    okay, if you want to join in pm me your msn .
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    (Original post by student92)
    what is meant by progeny testing? And can someone scroll down the points for artificial selection of modern dairy cows please?
    This is testing to see the offspring that the bull has had to see if he produced high milk yielding daughters

    Cows milk measured and recorded
    Progeny testign on bulls to see who have produced the daughters who have ahigh milk yield
    Elite cows who produce alot of milk super ovulated to produce alot of eggs
    In vitro fertilisation occurs and then planted into surrogate mother
    Embryo can be cloned and divided and placed into many surrogates
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    (Original post by student92)
    what is meant by progeny testing? And can someone scroll down the points for artificial selection of modern dairy cows please?
    isnt it just testing to see which bull for example has fathered cows with certain charecteristics?
    does that make sense?
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    (Original post by noodlecookie)
    http://www.isms.org.uk/images/cc_cookies.jpg :jumphug:

    EDIT: NEW RULES, SHARE EM lol
    sharing :O
    thats for losers
    lol :P
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    (Original post by chuck111)
    sharing :O
    thats for losers
    lol :P

    LEARN TO BE ONE THEN
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    Yeah, I'm up for a group F215 chat!
    I need help! :'(
    My email address is [email protected];
    please add me so we can chat, and you can help me xD
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    (Original post by student92)
    what is meant by progeny testing? And can someone scroll down the points for artificial selection of modern dairy cows please?
    Progeny testing is a test done on finding out the suitable traits which us humans are after for our benefit (quality) of a bull usually where its impregnates and those specific traits are looked for over generation.
    For the points will take ages to type down :/ and.... I need foodv
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    what time is everyone revising until??

    I think I am gonna stop about 9 and then go over all my notes before bed.
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    (Original post by thekooks)
    what time is everyone revising until??

    I think I am gonna stop about 9 and then go over all my notes before bed.
    About 10 or 11pm, depending on when the Lucozade I've chugged decides to wear off...
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    Muscle contraction anyone
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    for calculating chisquared will they give you values in the table?
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    (Original post by aimz08)
    Muscle contraction anyone
    Muscle contraction's very long-winded, exactly what bits do you want explaining?
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    (Original post by skatealexia)
    Anyone want to explain what the hardy weinburg principle means ?
    First equation to know:

    p+q = 1 (1 represents whole population)

    p = Dominant allele

    q = Recessive allele

    In the Q u should be given atleast one value (either the dominant or recessive value). In this case Dominant alleles is 0.6. To work out the recessive alleles all we do is....

    1 - p =q
    1 - 0.6 = q
    q=0.4


    Second Equation to know:

    p2 + 2pq + q2 = 1

    p2 = Dominant homozygous alleles

    2pq = Heterozygous alleles

    q2 = recessive homozygous alleles

    "1 in 2000 people have the genetic disorder cystic fibrosis, calculate how many are carriers"

    a) people who are carriers have heterozygous genes therefore we must work out 2pq. people who are affected from cystic fibrosis have recessive homozygous so that means we know what p2 is. (1/2000 = 0.0005, we have to change it to decimal figures thats just a rule u must do.)

    so we now know that p2 = 0.0005 and we need to work out 2pq. We can work out what q is from the first equation (p+q=1) so...square root of 0.0005 is 0.022 (thats the value of p). Then we do....

    1-p=q
    1-0.022=q
    q=0.98

    Now we have the values of both p AND q, we can now calculate 2pq.....2x0.022x0.98=0.04312. Remember that is amount of carriers for 100 people (look back to the second equation, the 1 refers to 100 people), so two work out the carriers in 2000 we do....2000x0.04312= 86


    Re-read through carefully this atleast three times and you should eventually understand it.
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    Please let the grade boundaries be quite low.. x
 
 
 
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