Other Patterns of Inheritance

1
Other Patterns of Inheritance

• Practice Problems

2
1.

• In snapdragon flowers RR red flowers, WW
  white flowers, and RW pink flowers.
• Complete the Punnett Square for the following
  cross.
• (RR x WW)

Genotype Phenotype



3
2.

• In an iris flower, purple (P) is incompletely
  dominant over white (W).
• What would be the results of a cross if both the
  parents were pale lavender (PW).

Genotype Phenotype



4
3.

• A woman with type O blood and a man who is type
  AB are expecting a child.
• What are the possible blood types of the child?

Genotype Phenotype



5
4.



Genotype Phenotype

• What are the possible blood types of a child
  whose parents are both heterozygous for B blood
  type?

6
5.



Genotype Phenotype

• Jill is blood type O.
• She has two older brothers, with blood types A
  B.
• What are the genotypes of her parents with
  respect to this trait?

7
6.

• In humans, wavy hair (CS) results from the
  codominant situation of curly hair (C) and
  straight (S).
• What are the possible results if a curly-haired
  man and a wavy-haired woman have children?

Genotype Phenotype



8
7.

• In crocus flowers, white (W) and purple (P)
  colors are codominant, and result in a purple and
  white striped flower when both alleles are
  present.
• What are the possible results from the
  cross-pollination of two striped crocuses?

Genotype Phenotype



9
8.



Genotype Phenotype

• Cattle can be red (RR all red hairs), white (WW
  all white hairs), or roan (RW distinct red
  and white hairs together).
• Predict the phenotypic ratios of offspring when a
  homozygous white cow is crossed with a roan bull.