JO IB BIO II: unit 6B HL inheritance
UNDERSTANDINGS / APPLICATIONS / SKILLS / NATURE OF SCIENCE:
TESTING PREDICTIONS & MULTIGENE CROSSES
10.2.A1: Completion and analysis of Punnett squares for dihybrid traits
10.2.S1: Calculation of the predicted genotypic and phenotypic ratio of offspring of dihybrid crosses involving unlinked autosomal genes
10.2.U5: Chi-square tests are used to determine whether the difference between an observed and expected frequency distribution is statistically significant
10.2.S3: Use of chi-squared test on data from dihybrid crosses
3.4.S2: Comparison of predicted and actual outcomes of genetic crosses using real data
POLYGENIC TRAITS
10.2.U4: The phenotypes of polygenic characteristics tend to show continuous variation
10.2.A3: Polygenic traits such as human height may be influenced by environmental factors
LINKED GENES
10.1.NOS: Making careful observations- careful observations and record keeping turned up anomalous data that Mendel’s law of independent assortment could not account for. Thomas Hunt Morgan developed the notion of linked genes to account for the anomalies
10.2.NOS: Looking for patterns, trends and discrepancies- Mendel used observations of the natural world to find and explain patterns and trends, Since then, scientists have looked for discrepancies and asked questions based on further observations to show exceptions to the rules. For example, Morgan discovered non-Mendellian ratios in his experiments with Drosophilia.
10.2.U2: Gene loci are said to be linked if on the same chromosome
10.2.A2: Morgans’s discovery of non-Mendellian ratios in Drosophila
10.2.S2: Identification of recombinants in crosses involving two linked genes
TESTING PREDICTIONS & MULTIGENE CROSSES
10.2.A1: Completion and analysis of Punnett squares for dihybrid traits
10.2.S1: Calculation of the predicted genotypic and phenotypic ratio of offspring of dihybrid crosses involving unlinked autosomal genes
10.2.U5: Chi-square tests are used to determine whether the difference between an observed and expected frequency distribution is statistically significant
10.2.S3: Use of chi-squared test on data from dihybrid crosses
3.4.S2: Comparison of predicted and actual outcomes of genetic crosses using real data
POLYGENIC TRAITS
10.2.U4: The phenotypes of polygenic characteristics tend to show continuous variation
10.2.A3: Polygenic traits such as human height may be influenced by environmental factors
LINKED GENES
10.1.NOS: Making careful observations- careful observations and record keeping turned up anomalous data that Mendel’s law of independent assortment could not account for. Thomas Hunt Morgan developed the notion of linked genes to account for the anomalies
10.2.NOS: Looking for patterns, trends and discrepancies- Mendel used observations of the natural world to find and explain patterns and trends, Since then, scientists have looked for discrepancies and asked questions based on further observations to show exceptions to the rules. For example, Morgan discovered non-Mendellian ratios in his experiments with Drosophilia.
10.2.U2: Gene loci are said to be linked if on the same chromosome
10.2.A2: Morgans’s discovery of non-Mendellian ratios in Drosophila
10.2.S2: Identification of recombinants in crosses involving two linked genes