AP BIOLOGY CHAPTER GUIDECh. 11 - Mendelian Patterns of Inheritance

1. What was the fundamental problem with the blending concept of inheritance? (p. 193)

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2. What are the tenets of the law of segregation? (p. 196)

a. __________________________________________________________________________

b. __________________________________________________________________________

c. __________________________________________________________________________

d. __________________________________________________________________________

3. Define these terms associated with classical genetics. (p. 196-197)

a. locus - ____________________________________________________________________

b. allele - ____________________________________________________________________

c. dominante allele - ___________________________________________________________

d. recessive allele - ____________________________________________________________

e. homozygous - ______________________________________________________________

f. heterozygous - _____________________________________________________________

g. genotype - ________________________________________________________________

h. phenotype - ________________________________________________________________

4. What are the tenets of the law of independent assortment? (p. 198)

a. __________________________________________________________________________

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b. __________________________________________________________________________

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5. It is important to note that the law of independent assortment applies only to alleles on

_______________________________ . (p. 198)

AP BIOLOGY CHAPTER GUIDE

6. Take a look at figure 11.7. Mendel’s laws hold up during meiosis because the homologous

chromosomes line up ____________

during metaphase I. Notice how during

metaphase II, each daughter cell has

only _______ member of each

homologous pair in keeping with the

law of segregation. Can gametes be

formed that contain ONLY the maternal

or paternal chromosomes? Explain

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7. We all know how to do punnet squares, but explain the idea of the product rule in relation to

probability of expected outcomes (p. 200)

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8. Define a testcross. What important conclusions can be drawn from the outcome? (p. 200)

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AP BIOLOGY CHAPTER GUIDE

9. From what 4 gamete combinations did these fruit flies arise from? (p. 201)

1. __________ 2. __________ 3. __________ 4. __________

10. Create a simple autosomal recessive pedigree with a mom, dad, and daughter. The daughter is

affected with cystic fibrosis and the parents are carriers. Provide the family’s genotypes using “F” for

the dominant allele and “f” for the recessive allele. (p. 201-202)

11. Create a simple autosomal dominant pedigree with a mom, dad, and son. The son is

not affected with osteogenesis Imperfecta, but the parents are. Provide the family’s

genotypes using “E” for the dominant allele and “e” for the recessive allele. (p. 201-202)

12. What is one key difference between the offspring of affected parents with an autosomal recessive

disease and the offspring of affected parents with an autosomal dominant disease?

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Cystic fibrosis (autosomal recessive) Osteogenesis Imperfecta (autosomal dominant)

AP BIOLOGY CHAPTER GUIDE

Description Example Punnett square / diagram

Multiple allelic traits

Incomplete dominance

Pleiotropy

Polygenic inheritance

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AP BIOLOGY CHAPTER GUIDE

Black bear + polar bear = panda bear?

X-linked inheritance

Description Example Punnett square / diagram

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