MCDB 20 Lecture Notes - Lecture 1: Heredity, Punnett Square, Chromosome
6 Jan 2018
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The (cid:862)(cid:271)le(cid:374)di(cid:374)g(cid:863) h(cid:455)pothesis is the idea that genetic material from the two parents blends together (the way blue and yellow paint blend to make green) The (cid:862)pa(cid:396)ti(cid:272)ulate(cid:863) h(cid:455)pothesis is the idea that pa(cid:396)e(cid:374)ts pass o(cid:374) dis(cid:272)(cid:396)ete he(cid:396)ita(cid:271)le u(cid:374)its (cid:894)ge(cid:374)es(cid:895) Mendel documented a particulate mechanism through his experiments with garden peas. Mendel used the scientific approach to identify two laws of inheritance. Mendel discovered the basic principles of heredity by breeding garden peas in carefully planned experiments. Mendel probably chose to work with peas because. There are many varieties with distinct heritable features, or characters (such as flower color); character variants (such as purple or white flowers) are called traits. Mendel chose to track only characters that occurred in two distinct alternative forms. He also used varieties that were true-breeding (plants that produce offspring of the same variety when they self-pollinate) In a typical experiment, mendel mated two contrasting, true-breeding varieties, a process called hybridization.
