Lecture_16_DulaiS09_GeneticsMendel

Lecture_16_DulaiS09_GeneticsMendel - Many lectures on this...

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1 Many lectures on this most important section
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2 AIMS •Learn some basic genetics…
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3 Watch for these… •T e r m s – Genes – Locus – Alleles – Homologous – Heterozygous – Dominant – Recessive
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4 Genetics: Principles of inheritance Mendelian Genetics (1) Lecture 16 – Chapters 11.1-11.3
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5 A subtle ( and important ) distinction: Reproduction & Inheritance Reproduction : Processes by which a parental organism (or two parental organisms) produces offspring. Life Cycle : Includes both reproduction and development. The series of events and processes from the time individual organisms are adult (fully developed) until their offspring is adult and has the capacity to reproduce. Biological inheritance : The transmission of the characteristics or features from parents to offspring. Genetics : The study of the principles that govern biological inheritance.
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6 Gregor Mendel Profession: Monk The Father of Genetics The Father of Genetics
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7 • Mendel had a strong background in plant breeding and mathematics • Selected pea plants because some of the their variable traits and ease of growth Gregor Mendel [1822-1884] undertook one of the first systematic studies of inheritance in the 1850 s. Flower color (red or white) Mendel’s experiments (cultivation and crossing of 30,000 pea plants) yielded some generalizations on inheritance of features from one generation to the next (those generalizations are known as the Mendelian Laws of Genetics).
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8 Some terms and concepts for understanding genetics • Units of information about specific traits • Passed from parents to offspring • Each gene has a specific location ( locus ) on a chromosome Genes A pair of homologous chromosomes Q) What happens to homologous chromosomes in Meiosis and Fertilization?
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Lecture_16_DulaiS09_GeneticsMendel - Many lectures on this...

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