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    Hey guys, I'm thinking the hardy wienberg stuff is going to come up tomorrow so i was just looking for some questions and found some decent ones, thought you guys might like to have a go at them http://www.indiana.edu/~l111/handouts/hardy.htm (there a bit complex with the questions but work through the steps which is what we need to be able to do, and it comes with answers)
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    (Original post by hopes)
    Hey guys, I'm thinking the hardy wienberg stuff is going to come up tomorrow so i was just looking for some questions and found some decent ones, thought you guys might like to have a go at them http://www.indiana.edu/~l111/handouts/hardy.htm (there a bit complex with the questions but work through the steps which is what we need to be able to do, and it comes with answers)
    Done these questions in class, they're quite easy and worth doing. :yep:
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    Fight or flight for anyone that's still up..

    1) perception of threat from auditory or visual stimulus

    2) this activates hypothalamus which stimulates sympathetic nervous system and triggers release of adrenaline

    3) hypothalamus also release corticotropin-releasing factor which stimulates the release of ACTH from the anterior pituitary gland

    4) ACTH stimulates release of a number of hormones from adrenal cortex

    These changes are responsible for the physiological changes in flight or fight
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    (Original post by hopes)
    Hey guys, I'm thinking the hardy wienberg stuff is going to come up tomorrow so i was just looking for some questions and found some decent ones, thought you guys might like to have a go at them http://www.indiana.edu/~l111/handouts/hardy.htm (there a bit complex with the questions but work through the steps which is what we need to be able to do, and it comes with answers)
    :woo: thank youuuuu ,you'r a life saver
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    Some quickfire qu's for anyone wanting to flex their muscles:

    - 3 ways giving variation in meiosis?
    - describe innate behavoir
    - Advantages of social behaviour in gorillas / baboons etc
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    (Original post by radical07)
    Some quickfire qu's for anyone wanting to flex their muscles:

    - 3 ways giving variation in meiosis?
    - describe innate behavoir
    - Advantages of social behaviour in gorillas / baboons etc
    Crossing over of chromatids, random distribution of chromatids in Meiosis II & random distribution and segregation of maternal and paternal chromosomes in meiosis I.
    Fertilisation: Different combinations of egg and sperm cell from genetically unrelated individuals

    Right or wrong ?
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    (Original post by radical07)
    Some quickfire qu's for anyone wanting to flex their muscles:

    - 3 ways giving variation in meiosis?
    - describe innate behavoir
    - Advantages of social behaviour in gorillas / baboons etc

    in crossing over with non-sister chromatids, the random arrangement and assorsment in metaphase 1.. and same again for metaphase 2

    a behaviour an animal is capable of from birth without any learning or practise

    enhances survival rate, knowledge of food sources shared, helping each other to detect predators

    probably missed loads out... it's late!
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    (Original post by radical07)
    Some quickfire qu's for anyone wanting to flex their muscles:

    - 3 ways giving variation in meiosis?
    - describe innate behavoir
    - Advantages of social behaviour in gorillas / baboons etc
    1. Crossing over, Reassortment of chromomes (metaphase1) Reassortment of chromatids (metaphase2)

    2. Innate behaviour occurs in invertebrates that live isolated short life spans, allows them to escape predators, find food, find and live in suitable habitat. Specific examples:

    Reflexes such as an escape reflex which follows a specific behavioural sequence upon being exposed to a certain stimulus.

    Kineses which is non directional orientated behaviour where the rate of movement of an organism increases when its in infavourable conditions i.e woodlice prefer to be in dark damp conditions therefore escape the light avoid drying out and being eat

    Taxes which is the same as the above but basically with a direction i.e photo/chemotaxix.

    3. Advantages include:

    One infant born at a time therefore maternal care and group protection increase survival rate.

    Infants learn through observing other members of the group and learned behaviour is vital to survive

    Final relative large brain size of gorilla's slows down the maturation

    food source and protection is shared within the group

    Danger is more easily detected and defferd as members of the group work together.

    mind the spelling, im tired and its late
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    1) Crossing over at prophase (combination of new alleles). Also random mutation or even random assortment of chromatids/maternal and paternal chromosomes

    2) Innate: not learned, stereotypical..genetically determined

    3) one born at time - better care of the young from the parent/ young learns from group e.g through observation/ have communication skills they learn them from other members of the group/ large brain size, slows maturation...
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    (Original post by radical07)
    Some quickfire qu's for anyone wanting to flex their muscles:

    - 3 ways giving variation in meiosis?
    - describe innate behavoir
    - Advantages of social behaviour in gorillas / baboons etc
    1-independant assortement
    2-crossing over at prophase 1
    3-not sure

    innate behaviour is a behaviour that is determined by the genome of the organism
    it is not affected by the environment
    no difference in the behaviour within the same species
    passed to offspring

    social behaviours increase survival chance for infant gorillas as they will be safe under the protection of the troop
    they stay close to mothers ,this allows them o learn survival tips from mother and develop thier insight learned behaviours.
    knowledge of food location and predator location can be shared by the whole troop.agian this increases survival.
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    Any more questions before i knock myself out
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    (Original post by toxik_apple)
    I believe this is mostly what you need to know, if not feel free to kill me
    Thankyouuuuu!

    (Original post by Tinkerbelle ♥)
    Fight or flight for anyone that's still up..
    :eek: I understand it now, merci!
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    good luck ya'll hope we ace this
    am out :goodnight:
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    How are repsonses to environmental stimuli coordinated by nervous AND endocrione help pleaaaase
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    (Original post by 102102)
    Any more questions before i knock myself out
    hardy weinberg....so if something to do with Cystic Fibrosis or something...and one in 3000 are sufferers from it. Do we have to work out 2pq then times it by 3000? edit to work out the carriers
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    (Original post by hopes)
    Hey guys, I'm thinking the hardy wienberg stuff is going to come up tomorrow so i was just looking for some questions and found some decent ones, thought you guys might like to have a go at them http://www.indiana.edu/~l111/handouts/hardy.htm (there a bit complex with the questions but work through the steps which is what we need to be able to do, and it comes with answers)

    The spec states ' use hardy-weinbeg principle to predict allele frequency'
    only.


    So forget genotype,and percentage frequency!
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    Anyone here planning an all-nighter? I'm very tempted as whenever I'm not looking at a text book the information is seeping out from my ears! :zomg:
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    (Original post by HotCoco.)
    Anyone here planning an all-nighter? I'm very tempted as whenever I'm not looking at a text book the information is seeping out from my ears! :zomg:

    lol same..

    Hrmm you might of tempted me subliminally!
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    I'm not staying up all night, maybe till 2 or 3 ish. I have got 15 pages left in the textbook before I've done it all. Then I'm going to do the hardest bits again. Then I'll sleep.

    I hate to say it, but I feel quite ready for this. I feel I've learnt a lot, especially in the last couple of hours. But when I see the questions it'll be another story I'm sure!

    I'm pessimistic, but hopefully, I'll still get a B :p:
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    (Original post by aimz08)
    hardy weinberg....so if something to do with Cystic Fibrosis or something...and one in 3000 are sufferers from it. Do we have to work out 2pq then times it by 3000? edit to work out the carriers

    srry for late reply..got distracted..this is how u knw what you have to do

    The 2pq is only done if you need to find out the heterozygous (I think)

    V
    V

    Finding suffers (Individuals) u do 2pq and when you reach yur answer u times by the total population u have

    Finding Frequency: do not times by population number

    Finding percentage, just times by 100
 
 
 
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