BIO152H5 Chapter Notes - Chapter 14: Heredity, Mendelian Inheritance, Sex Organ
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Hypothesis predicts that, over many generation, a freely mating population will give rise to a uniform populations of individuals devoid of variation (no variation among the pop) Blending hypothesis fails to explain inheritance, such as traits reappearing after skipping a generation. Alter(cid:374)ati(cid:448)e to the (cid:271)le(cid:374)di(cid:374)g (cid:373)odel is a (cid:862)parti(cid:272)ulate(cid:863) h(cid:455)pothesis of i(cid:374)herita(cid:374)(cid:272)e: the ge(cid:374)e idea. Particulate hypothesis suggests that parents pass on discrete heritable units-genes-that retain their seperate identities in offspring. Deck of cards rather than a pail of paint. Deck of cards is shuffled, just like genes, and passed on. 14. 1 mendel used the scientific approach to identify two laws of inheritance. Why did mendel use peas: available in many varieties, short generation time, large number of offsprings from each mating, sex organs are in the plants, therefore mating can be controlled. True-breeding: over many generation of self- pollination, same variety of plants produced. P generation: parental generation, this is the true-breeding plants that are mating.
