BIOA01H3 Chapter Notes - Chapter 10: Sickle-Cell Disease, Pea, Pisum
18
BIOA01H3 Full Course Notes
Verified Note
18 documents
Document Summary
Sickle cell anaemia: autosomal recessive gene; symptoms: weakness, dizziness, shortness of breath and pain. 10. 1 the beginning of genetics: mendel"s garden peas: Until about 1900 scientists and the general public believed in the blending theory of inheritance which suggested that hereditary traits blend evenly in offspring through mixing of the parents" blood. Mendel studied a variety of heritable characteristics called characters (such as flower colour etc. ) A variation in a character is called a trait. Mendel established that characters are passed to offspring in the form of discrete hereditary factors which are now known as genes. The inheritance patterns mendel observed are the results of segregation of chromosomes, on which the genes are located, to gametes in meiosis. Mendel chose the garden pea (pisum sativum) because the plant could grow easily in the monastery garden. The male gametes are sperm nuclei contained in the pollen, produced in the anthers of the flower.
