Biology 242: LAB: GAMETOGENESIS (Spermatogenesis– Male; Oogenesis – Female)TALKING POINTS for Reproductive Cell DivisionI.Central Dogmaof Molecular Biology Even before the genetic code was fully revealed, Francis Crick articulated what became known as the Central Dogmaof molecular biology: a summary of the flow of information in cells and between generation of cells.Central Dogmamay be represented as follows:CellReplication Transcription TranslationDivisionDNADNARNA Protein TraitII.Genetics Terminology (Genotype)(Phenotype)A.–ploid (or ploidy) refers to the number of setsof chromosome a cell (or organism) has1. Haploid (1n) – ONE set of chromosomes2. Diploid (2n) – TWO sets of chromosomes3. Triploid(3n); Tetraploid (4n); etc. Polyploid(multiple sets of chromosomes)B.Chromatin / Chromosomes / Genes / Alleles / Traits / Genotype / Phenotype / Genome1. DNA is in its relaxed,“ribbon-like” form of CHROMATIN in the non-dividing cell (Interphase)(Chromatin is the entire complex of DNA that makes up a eukaryotic genome)2. DNA is in its condensed, “tightly-coiled” form of CHROMOSOMES in the dividing cell
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