The Relation Between Genetics And Physiology And Medicine

1078 Words Nov 4th, 2014 5 Pages
Thomas H. Morgan: “The relation of genetics to physiology and medicine.”
Genetics is the study of how hereditary characteristics or genes are inherited. The studies of genetics have first been recognized by Gregor Mendel. Gregor Mendel studied how traits were passed down from parent to offspring using pea plants. It was later discovered that Mendel’s law of inheritance not only worked for pea plants but also on, animals and humans. Mendel’s experiments gave rise to the importance of chromosomes in genetic experiments, crossing over, and linkage. Thomas H. Morgan experimented on Drosophila melanogaster, fruit flies to give further analysis of Mendel’s two laws of inheritance. Morgan’s work have been recognized for discovery of sex-linked genes and the importance of understanding genes for medical practice, in which he discusses in his Nobel Prize lecture; “The relation of genetics to physiology and medicine.”
To first understand sex- linked inheritance we must understand Gregor Mendel’s two laws of inheritance. Mendel’s first law of inheritance or Law of Segregation, describes how each allele in a pair separates and forms into different gamete or sex cells, during the uniting of these sex cells (the sperm and the egg). The second law of inheritance or Law of independent assortment states that, a pair of alleles segregate or separate independently from the other allele in the union of the sex cells. An addition was added to Mendel’s two inheritance laws. These
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