1. Review ch 11 Complex Patterns of Inheritance
Biology

2. Types of Inheritance you should know
Incomplete Dominance
Co-dominance
Multiple Alleles
Epistasis
Sex Determination
Dosage Compensation
Sex-Linked Traits
Polygenic Traits
Environmental Influences

3. What type of Inheritance is shown in the following slides?
On a blank sheet of paper, write your name, class hour, and number it from #1-12.
Work with your table partner to determine the types of inheritance patterns from the following examples………->

4. 1. ______________
The image shows a heterozygote both the dominant normal red blood cell and the recessive sickle cell present at the same time.
Heterozygous individuals are able to live relatively normal lives

5. 2. ______________
The heterozygote is an intermediate phenotype between the dominant and recessive phenotypes.

6. 3. _________________
Some traits exhibit many phenotypes and vary across a broad range.
Height of a person
Hand and foot size
Hair color
Skin color
Eye color
Many genes on different chromosomes give unlimited phenotype possibilities

7. 4. ______________
A red shorthorn bull may be all red, all white, or a combination of red and white hair in the heterozygous (roan cattle)
Both alleles are expressed in the heterozygous condition

8. 5. ______________
This inheritance can also show a hierarchy of dominance from just 4 alleles

9. Two answers needed: 6. ____and______
Blood groups in Humans have three alleles, two are dominant and one is recessive.
Both dominant alleles show as individual phenotypes when combined in heterozygotes

10. 7. ______________
A person’s gender is determined by just one set of chromosomes. If the y chromosome is present, the offspring will be a male.

11. 8. ______________
This inheritance pattern event occurs in females of all mammals as they have XX while males have Xy. This is also called X-inactivation. Example: Calico cats can only be female

12. 9. ______________
This inheritance pattern results when one allele hides the effect of another allele.
Dominant E allele will determine if the coat will have any dark pigment
Dominant B allele determines how dark the pigment will be

13. 10. ______________
This inheritance pattern is more likely to be present in males than in females. Traits are found on the X chromosome which men only have Xy

14. 11. _____&_____
This inheritance is more likely to be present in males than females, and females could be a “carrier” without showing any symptoms.
Can males be a carrier of a recessive hemophilia allele? _______

15. 12. What has to happen for a girl to be colorblind?
_________________

16. 13. What can we learn from a Karyotype
13. What can we learn from a Karyotype? Give two answers:_______ and _______

17. Answers: 10. x-linked 11. x-linked, no
1. codominance
2. incomplete dominance
3. polygenic inheritance
4. codominance
5. multiple alleles
6. multiple alleles and codominance
7. sex determination
8. dosage compensation
9. epistasis
10. x-linked
11. x-linked, no
12. A girl who is colorblind must get a colorblind gene from her mom and her dad must be colorblind (XbXb)
13. number of chromosomes, sex of offspring, if any nondisjunctions have occured