Alternative Patterns of Heredity (AP BIO)

Match the type of inheritance with its description.

• incomplete dominance

• inheritance pattern where one allele is completely dominant over another

• x-linked

• inheritance where a single trait is controlled by multiple genes

• complete dominance

• gene present on the X, but not the Y chromosome

• polygenic inheritance

• complete and simultaneous expression of two alleles for the same characteristic

• codominance

• inheritance where both alleles contribute to the phenotype

In _ inheritance, one trait is governed by two or more sets of alleles where dominant alleles have a quantitative effect on the phenotype.

Tags

NGSS.HS-LS4-3

Chicken feathers are inherited through codominance. When a black chicken BB is mated with a white chicken WW, the resulting phenotype is called erminette/checkered BW.   

What are the phenotypes if a checkered /erminette chicken is mated with a black feathered chicken.

• Black: 50%

  White: 0%

  Checkered: 50%

• Black: 0%

  White: 50%

  Checkered: 50%

• Black: 50%

  White: 0%

  Grey: 50%

• Black: 50%

  White: 50%

  Checkered 50%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Sickle cell anemia is a trait that exhibits codominance. A person with an AA genotype does not have sickle cell anemia, and a person with an SS genotype has full sickle cell anemia. A person with an AS genotype will have some sickle-cells, though s/he might show minimal or no symptoms (a “carrier”). 

Englebert is a carrier for sickle-cell anemia (shows minimal symptoms), and his wife, Gwendoline, does not have it. What are the chances that Engelbert and Gwendoline will have a child with ANY sickle-shaped blood cells?

• 50%

• 25%

• 100%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In a certain species of flowers, petal color is determined by codominance. A red petal flower (RR) is crossed with a white petal flower (WW), resulting in a pink petal flower (RW). What are the expected phenotypes if a pink petal flower is crossed with a red petal flower?

• Red: 50%

  White: 50%

  Pink: 0%

• Red: 25%

  White: 25%

  Pink: 50%

• Red: 50%

  White: 0%

  Pink: 50%

• Red: 0%

  White: 50%

  Pink: 50%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a population of rabbits, fur color is determined by codominance. A rabbit with genotype BB has black fur, and a rabbit with genotype WW has white fur. A rabbit with genotype BW has grey fur. If two grey fur rabbits are mated, what is the probability of their offspring having black fur?

• 25%

• 50%

• 75%

• 0%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In a certain type of fish, scale color is determined by codominance. A fish with genotype GG has green scales, and a fish with genotype YY has yellow scales. A fish with genotype GY has scales that are both green and yellow. If a green scale fish is crossed with a green-yellow scale fish, what are the chances of obtaining a fish with only green scales?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Use the Punnett square to complete the following matches.

• Incomplete dominance

• F1 generation 100% black feathers

• Complete dominance

• F1 25% white feathers

• Codominance

• F2 50% checkered chickens

• Epitasis

• F2 25% black

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2