Unit D: Genetic Processes
Chapter 6: Complex Patterns of Inheritance
-
While some genes influence phenotype according to Mendel’s straightforward
laws of dominance, many genes influence phenotype in more complex ways.
Specific Expectations:
D1.1: analyze, on the basis of research, some of the social and ethical implications of
research in genetics and genomics. (6.3)
D1.2: evaluate, on the basis of research, the importance of some recent contributions
to knowledge, techniques, and technologies related to genetic processes. (6.3)
D2.1: use appropriate terminology related to genetic processes. (6.1, 6.2)
D2.3: use the Punnett square method to solve basic genetic problems involving
monohybrid crosses, incomplete dominance, co-dominance, dihybrid crosses, and
sex-linked genes. (6.1, 6.2)
D3.3: explain the concepts of genotype, phenotype, dominance, co-dominance,
recessiveness, and sex linkage according to Mendelian laws of inheritance. (6.1, 6.2)
D3.4: describe some genetic disorders caused by chromosomal abnormalities or
other genetic mutations in terms of chromosomes affected, physical effects, and
treatments. (6.1, 6.2)
6.1: Beyond Mendel’s Observations of Inheritance
pg. 242 - 250
Key Terms: Incomplete dominance, co-dominance, heterozygous advantage, contiuous
variation, and polygenic trait.
Incomplete Dominance
Incomplete Dominace and Human Disease
Co-dominance
Sickle Cell Anemia
Learning Check:
1-6
pg. 244
Multiple Alleles
Human Blood Groups
Rabbit Coat Colour
Clover Leaf Patterns
Practice Problems: 1 – 10
pg. 247
Environmental Effects on Complex Patterns of Inheritance
Polygenic Inheritance
1 – 11
pg. 250
Activity 6.1: Identifying a Polygenic Trait
1–2
pg. 248
Study Guide: Self Assessment
1 – 12
SG. 84 – 85
Incomplete Dominance and
Co-dominance (6.1)
1–4
SG. 86 – 87
Polygenic Traits (6.1)
1–4
SG. 88 – 89
Review Questions:
6.2: Inheritance of Linked Genes
pg. 251 - 259
Key Terms: linked genes, and sex-linked genes
Linked Genes
Crossing Over and the Inheritance of Linked Genes
Using Gene Linkage for Chromosome Mapping
Learning Check:
7 – 12
pg. 253
Sex-linked Inheritance
Sex-linked Genes
The Red and White Eyes of Fruit Flies
Sex-linked Traits in Humans
Colour Vision Deficiency: An X-linked Recessive Trait
Hemophilia: A Common Sex-linked Trait in Humans
Practice Problems:
11 – 20
pg. 258
1 – 15
pg. 259
Barr Bodies: Inactive X Chromosomes
Review Questions:
Thought Lab 6 – B: Sex-linked Crosses
Study Guide: Linked Genes (6.2)
Sex-linked Traits (6.2)
pg. 270 -271
1–2
SG. 90
1–3
SG. 91 – 92
6.3: The Future of Genetics Research
pg. 260 - 267
Key Terms: bioinformatics, genomics, genetic profile
The Human Genome Project
What’s in Our Genome?
The Development of Bioinformatics
Learning Check:
13 – 18
pg. 262
Genomics: The Study of Genomes
Linking Genetic Variations to Disease
Beyond the Genome Sequence
Studying Gene Expression
Studying Gene Expression Using Microarrays
Genetic Information: Public Benefits and Concerns
What Can Happen to Information from a Genetic Profile?
Ownership of Genetic Information
1 – 15
pg. 267
Activity 6.2: Accessing Genetic Information
1–2
pg. 262
Study Guide: Genetic Research (6.3)
1–3
SG. 93 – 94
Review Questions:
Bringing It All Together
Practice Test
SG. 95
1 – 14
SG. 96 – 97