Tuesday, April 3, 2012
Tues-Day 2
AP Chem : We began our penultimate unit: Thermodynamics. We discussed the first law of thermo: conservation of energy, as well as state vs. non-state functions/factors.
Bio - we showed how "test-crosses" are used to determine the genotype of a parent that exhibits a "dominant" trait (yet can have a genotype of either homozygous dominant or heterozygous).
We then discussed and gave an example of two types of "intermediate" dominance: co-dominance (in which BOTH alleles are expressed, show up, INDEPENDENTLY, in the offspring phenotype) and incomplete dominance (in which both alleles' traits are BLENDED to form an intermediate version of the given trait e.g. red x white forms PINK-blended offspring).
We also discussed multiple alleles of a given gene, and gave an example of human blood types i.e. the A,B, and O alleles.
Bio - we showed how "test-crosses" are used to determine the genotype of a parent that exhibits a "dominant" trait (yet can have a genotype of either homozygous dominant or heterozygous).
We then discussed and gave an example of two types of "intermediate" dominance: co-dominance (in which BOTH alleles are expressed, show up, INDEPENDENTLY, in the offspring phenotype) and incomplete dominance (in which both alleles' traits are BLENDED to form an intermediate version of the given trait e.g. red x white forms PINK-blended offspring).
We also discussed multiple alleles of a given gene, and gave an example of human blood types i.e. the A,B, and O alleles.
# posted by C @ 7:33 AM 
