HMB265H1 Chapter 2: HMB265 Lecture 2 Readings - Mendelian Genetics
14 Sep 2017
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Hmb265 lecture 2 readings - mendelian genetics (pg 16-22, 24-31) Artificial selection was the first applied genetic technique. People produced plants/animals w/ desired characteristics (as) for long time. Didn"t understand why valued trait sometimes disappear, then reappear in only some offspring. Selective breeding to make sheep that have lots of wool. [1] one parent contributes most to offspring"s inherited features. [2] blended inheritance = parental traits mixed + forever changed in offspring. Ex: blue parent + yellow parent = green baby. Might explain why kids look like combo of parents. But doesn"t explain why siblings look diff. Male + female organs in same flower = normal self-fertilizing. Brush pollen from anthers of flower 2 onto flower 1. For each generation, can get lots of individuals in short growing season. Ex: if worked with sheep, only a few offspring. Ex: purple vs white flowers & yellow vs green peas. Mendel called constant but mutually exclusive alternative traits antagonistic pairs :
