PSYA01H3 Chapter Notes - Chapter 3: Genetic Marker, Meiosis, Twin
Document Summary
Genetics: study of genetic make up of organisms and how it influences their physical behavioural characteristics. study of structure 7 functions of genes, how they are transmitted from one generation to another, & how they operate in populations. Heredity: sum of traits and tendencies inherited from a person"s parents and other biological ancestors. experimental crossbreeding with pea plants, uncovered principles of heredity. concluded how height, colour, seed shape, and other traits could be transmitted from one generation to the next. genes are small units of dna that direct the synthesis of proteins & enzymes according to the particular sequences of nucleotide bases they contain. junk dna not involved in direct synthesis of proteins and known as non-coding dna. Thus, non coding sequences of dna may plya a ritical role to regulate the processes of other genes that synthesize proteins by genes. Genome: total set of genetic material of an organism. 30 000- 40 000 genes w/in human genome.
