1. 11.2 COMPLEX PATTERNS OF HUMAN INHERITANCE
WHAT YOU WILL LEARN
-Distinguish between various complex inheritance patterns
-PREDICT/ANALYZE outcomes
-How environment can influence a trait

2. READING Q’s 1-DESCRIBE:
What effect sickle-cell anemia has on red blood cells
-changes them to sickle or C-shaped.

3. 2-EVAULUATE -What is the most common blood type? -O
READING Q’s
2-EVAULUATE
-What is the most common blood type? -O
IAIA
IAi
IBIB
IBi
IAIB ii

4. 3-EVALUATE -What allele is dominant of Cch -C
READING Q’s
3-EVALUATE
-What allele is dominant of Cch -C

5. READING Q’s
4-IDENTIFY
-A person has 22 pairs of autosomes and 2 X chromosomes.
What is the person’s gender?
-FEMALE

6. READING Q’s 5-DRAW CONCLUSIONS
-Why is a recessive sex-linked trait less likely to occur in females than in males?
-males must inherit only one allele (AFFECTED X) to have trait

7. READING Q’s
6-PREDICT
-Circle the genotype that represents a color-blind person
-XbY

8. READING Q’s 7-LIST -An example of a polygenic trait. -skin color
-height
-eye color
-fingerprint pattern

9. READING Q’s
8-EVALUATE
-Circle the trait that shows the strongest genetic influence
-blood types

10. GROUP WORK: APPLICATION NOTES
-As a cooperative group complete the note sheet using your knowledge from the reading/discussion.
HIGHLIGHT/MARK supporting info
BOOK
-As a cooperative group complete the 11.2 VOCAB
-ALL GROUP MEMBERS AGREE on SAME DEFINITION
-may have DIFFERENT EXAMPLES [picture or words]
11.2 VOCAB

11. -Complex Inheritance traits are an EXCEPTION to Mendel’s research
MAIN IDEA
-Complex Inheritance traits are an EXCEPTION to Mendel’s research

12. VOCABULARY REVIEW: gamete
-mature sex cell with half (haploid) # of chromosomes
1-any chromosomes that are not sex chromosomes
AUTOSOMES
2-inheritance patterns-BOTH allele traits expressed in phenotype of hetero indv.
CODOMINANCE
3- interaction of alleles with one allele masking effects of the other
EPISTASIS
4-inheritance pattern-phenotype is a MIX of the 2 homozygous parent traits
INCOMPLETE DOMINANCE

13. VOCABULARY MULTIPLE ALLELES POLYGENIC TRAIT SEX CHROMOSOMES
5-presence of more than 2 alleles for a genetic trait
MULTIPLE ALLELES
6-inheritance pattern-trait controlled by 2 or more genes on same/different chromosomes
POLYGENIC TRAIT
7- chromosomes determine the sex of an individual, carry sex-linked characteristics
SEX CHROMOSOMES
8-traits controlled by genes located on sex chromosomes
SEX-LINKED TRAITS 

14. INCOMPLETE DOMINANCE
ANALYZE: the ratios of offspring

15. CODOMINANCE
DETERMINE: R=normal dominant R’=sickle cell recessive
The correct coloumn for each phenotype x x x

16. COMDOMINANCE
PREDICT: the results of two people who are heterozygous for sickle-cell anemia but lead normal lives have a child
RR’ x RR
25% RR no alleles for disease
50% RR’ heterozygous/ lead normal lives
25% R’R’ homo recessive/ sickle cell disease

17. MULTIPLE ALLELES IDENTIFY:
the blood group that results from each combination of genotypes

18. EPISTASIS,SEX DET,DOSAGE COMP,SEX LINKED, POLYGENIC
ANALYZE:
the role of each inheritance. Give example.

19. EPISTASIS,SEX DET,DOSAGE COMP,SEX LINKED, POLYGENIC
REFER: to punnett square to answer questions: sex-linked
DETERMINE: gender, color vision
1-Does the father have color-blindness? yes no
2-Does the father have a recessive allele? yes no
3-What gender is the child with color-blindness? male female x x x

20. ENVIRONMENTAL STUDIES
IDENTIFY:
Environmental influences that can affect phenotype

21. genetic environmental identical twins fraternal twins genetic
TWIN STUDIES
DESCRIBE:
The use of twin studies in the study of genetics.
Scientists use twin studies to distinguish between __________________ and __________________ influences on a trait. If a high percentage of ________________________ but not ________________________ express a trait, there is a strong chance that the trait is __________________.
genetic
environmental
identical twins
fraternal twins
genetic