ANSC 101 Lecture Notes - Lecture 5: Cell Division, Mitosis, Chromosome
27 Aug 2016
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*must be divisible by 2 because of sexual reproduction [sterile animals have an uneven # of. Mitosis- every time the cell divides, new dna is made. Double helix unwinds, new dna is assembled onto old strands which serve as templates for the new. Cell cycle- total time for cell to prepare for division. Cell division- the process by which tissues grow. Synthesis phase [of cell cycle]- replication of dna. Chromosome makes mirror image of itself aka sister chromatid. When mitosis is complete, the cell divides producing 2 new cells each with a complete set of chromosomes. Each set of chromosomes contains within its sequence a set of genes that is unique to that chromosome. Gene-specific segment of dna that codes for a specific trait. Promoter- start site aka where the gene begins aka the on switch. Exons: coding regions aka where mrna comes from.
