Download Patterns of Inheritance

Patterns of Inheritance
Topics
Genes and chromosomes
1. Heredity and the environment
2. Mendel and the idea of alleles
3. Genes and chromosomes
Mendelian patterns of inheritance
1. Probability and genetics
2. Inheritance of alleles
3. Sex determination
Other patterns of inheritance
1. Multiple alleles and alleles without dominance
2. Linked genes
3. X-linked traits
4. Nondisjunction
5. Multigene traits
What to Read
Chapter 9 pp 142-147
Chapter 9 pp 147-151, 163
Chapter 9 pp 151-166
Vocabulary
Allele
Codominant
Dihybrid
Dominant
F1 generation
F2 generation
1
2
3
4
5
6
7
8
9
1
2
Genome
Genotype
Heterozygous
Homozygous
Incomplete dominance
Monohybrid
Multiple alleles
Nondisjunction
Parental generation
Pedigree
Phenotype
Probability
Recessive
X-linked trait
Targets
Explain the roles of heredity and environment in organism development.
Explain the relationship among alleles, genes, and chromosomes.
Apply the principles of probability to genetics.
Explain Mendel’s principles of segregation and independent assortment.
Give examples of how sex is determined in several organisms.
Explain the role of multiple alleles in inheritance.
Explain linked genes.
Recognize how X-linked traits differ from other linked traits.
Summarize the effects of nondisjunction.
Questions to Consider
Blue (KC 366) Create a concept map using the following words: codominant, genes, homologous
chromosomes, multiple alleles, nondisjunction, recessive, trait, X-linked. Start with the
word ALLELE and branch from there. Add as many other concepts from the chapter as
you can. Be sure to include appropriate linking words for all concepts.
Blue (RI 366) Explain Mendel’s two principles of inheritance.
3
Blue
(UC 366)
4
5
Blue (E 367)
Green
(MGP 169)
In paternity lawsuits, blood typing often is used to provide genetic evidence that the
alleged father could not be related to the child. For the following mother-child
combinations, indicate which blood types could NOT have been the father’s: (1) Mother
with O and child with B; (2) Mother with B and child with A; (3) Mother with AB and child
with B.
How will a complete gene map for humans be useful? How might it be a problem?
Heather was surprised to discover that she suffered from red-green color blindness. She
told her biology teacher who said, “Your father is color blind too, right?” How did her
teacher know this? Why did her teacher not say the same thing to the color blind males
in the class?