Chapter 11 / 7 short lessons
Inheritance and genetic problems
Solve crosses from gametes, linkage and pathways, with clear probability assumptions.
H2 Biology / 9477 / 2027 syllabus
What do you think?
Two genes are studied. Is 9:3:3:1 automatically the answer?
Lessons
0 of 7 marked as readFrom genotype to phenotype
Use genetic terminology and explain transmission through gametes and gene products.
About 6 minDihybrid crosses and test crosses
Solve independent dihybrid and test-cross problems with stated assumptions.
About 8 minCodominance and multiple alleles in crosses
Solve crosses combining ABO codominance/multiple alleles with another locus.
About 7 minSex linkage and conditional probability
Solve X-linked problems, including an independently assorting autosomal locus.
About 8 minLinkage changes gamete probabilities
Explain linkage, crossing-over and altered dihybrid/test-cross ratios.
About 8 minInfer ratios from a pathway
Solve epistasis problems from interactions between loci.
About 8 minGenes, diet and continuous variation
Explain environmental effects, honeybee differentiation and patterns of variation.
About 7 minWhat you will be able to do
- Use precise genetic language.
- Solve dihybrid, codominant, sex-linked and linked crosses.
- Infer epistasis and distinguish genetic/environmental effects.