1) Draw chromosomes as an X or /, not decondensed. 2) Since we are focusing on the DNA, do not draw the nuclear membrane or spindle fibers. 3) For simplicity, do not indicate crossover in your diagrams. 4) Use different colors for each "set" of information (one large and one small chromosome). 5) Using the same genes/alleles as DTL 15 & 16, mark gene locations and label them in each cell. 6) Make sure you show that homologous chromosomes are the same size and sister chromatids are identical.
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.



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