BIO152H5 Lecture Notes - Lecture 4: Prometaphase, Telophase, Cell Cycle
Document Summary
Prokaryotes undergo binary fission: cell grows to roughly twice its size and then divides into 2 cells. One copy of the origin moves to the other side: replication continues. Copy of the origin on both sides. New cell wall deposits: 2 daughter cells result. Functions: reproduce, growth and development, tissue renewal. Cell"s genetic information genome: eukaryotic genomes usually consist of a number of dna molecules, all of this has to be copied and then 2 copies of it can be made. Dna molecules are packaged into structures called chromosomes: consist of one very long, linear dna molecule associated with proteins. Each dna consists of 100-1000s genes, units of information that specify an organism"s inheritable trait. The associated protein maintains the structure of the chromosome and helps control the activity of the genes. Entire complex of dna and proteins that is the building material of chromosomes is referred to as chromatin. Somatic cells (cells apart from the reproductive cells)
