BIOL 103 Chapter 9: Patterns of Inheritance

• School: George Mason University
• Department: Biology
• Course: BIOL 103
• Professor: chaitanyaravi

Document Summary

9. 1 the study of genetics has ancient roots. Hippo(cid:272)rates suggested that parti(cid:272)les (cid:272)all (cid:862)pa(cid:374)ge(cid:374)es(cid:863) tra(cid:448)el fro(cid:373) ea(cid:272)h part of a(cid:374) orga(cid:374)is(cid:373)"s (cid:271)od(cid:455) to the eggs or sper(cid:373) a(cid:374)d the(cid:374) are passed to the (cid:374)e(cid:454)t ge(cid:374)eratio(cid:374) . Incorrect: the reproductive cells are not composed of particles from somatic cells, and changes in somatic cells do not influence eggs and sperm. New hypothesis: the idea that the hereditary materials contributed by the male and female parents mix in forming the offspring. 9. 2 the science of genetics began in an abbey garden. Heredity is the transmission of traits from one generation to the next. Genetics, the scientific study of heredity, began with mendel deduced the fundamental principles of genetics by breeding garden peas: argued parents pass discrete (cid:862)herita(cid:271)le fa(cid:272)tors(cid:863), ge(cid:374)es, o(cid:374) to their offspri(cid:374)g. Character: a heritable feature that varies among individuals, such as flower color. Trait: each variant for a character, such as purple or white flowers.