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couple of bio questions

Discussion in 'DAT Discussions' started by pistolpete007, Jun 16, 2008.

  1. pistolpete007

    pistolpete007 2+ Year Member

    May 18, 2008
    whats the difference b/w releaser phermone and sex phermone. also on destroyer 185:
    A. chemical that tavels outside the body, carrying info to members of the same species-AGGREGATION PHERMONE?
    Bthey may act as sex attractants- is this sex phermone or releaser?
    c.Fromic acid produced by ants is an example of a Trail phermone?
    D.Many vertebrates use pheromones in feces, urine or scet glands to mark territories....territorial phermone

    If an organism has a diploid number 18, how many chromatids are visible at the end of mitotiic prophase, mitotic telophase, meisois prophase I, meiosis telophase I, meiosis prohase II, and meiosis telophase II respectively?
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  3. osimsDDS

    osimsDDS 5+ Year Member

    Jun 8, 2007
    I will answer the second question...end of mitotic prophase=36, mitotic telophase=18 (if you are refering to a single cell, each has 18), meiosis prophase I=36, meiosis telophase I=18, meiosis prophase II=18, meiosis telophase II=9

    1 sister chromatid = 2 chromatids
    1 chromosome = 1 or 2 chromatids = 2 sister chromatids

    I put 1 or 2 chromatids because during prophase I when you have a homologous chromosome and 2 chromatids it is 1 chromosome but after they seperate completely during anaphase II you will still have 1 chromosome with 1 chromatid...
  4. DDSguyLA

    DDSguyLA 2+ Year Member

    Mar 12, 2008
    as far as I know, there isnt much of diff between releaser phermones and sex phermones. They both kinda of do all mention facts that you said.

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