Non-Mendelian Pattern of Inheritance

What is incomplete dominance?

• • A) Both alleles are fully expressed in the phenotype.

• • B) One allele is completely dominant over the other.

• • C) The heterozygous phenotype is a blend of the two homozygous phenotypes.

• • D) Neither allele is expressed in the phenotype.

What is codominance?

• • A) Both alleles are fully expressed in the phenotype.

• • B) One allele is completely dominant over the other.

• • C) The heterozygous phenotype is a blend of the two homozygous phenotypes.

• • D) Neither allele is expressed in the phenotype.

Which of the following is an example of incomplete dominance?

• • A) Blood type AB

• • B) Red and white flowers producing pink flowers

• • C) Sickle cell anemia

• • D) Eye color

Which of the following is an example of codominance?

• • A) Blood type AB

• • B) Red and white flowers producing pink flowers

• • C) Sickle cell anemia

• • D) Eye color

What are multiple alleles?

• • A) More than two alleles for a genetic trait

• • B) Two alleles for a genetic trait

• • C) One allele for a genetic trait

• • D) No alleles for a genetic trait

How many alleles are involved in the ABO blood group system?

• • A) 2

• • B) 3

• • C) 4

• • D) 5

In snapdragons, red (RR) and white (WW) flowers produce pink (RW) flowers. What type of inheritance is this?

• • A) Complete dominance

• • B) Incomplete dominance

• • C) Codominance

• • D) Multiple alleles

If a person has type O blood, what is their genotype?

• • A) IAIA

• • B) IBIB

• • C) IAIB

• • D) ii

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a cross between a black-feathered chicken (BB) and a white-feathered chicken (WW), what is the expected phenotype of the offspring if the trait shows codominance?

• • A) Black

• • B) White

• • C) Gray

• • D) Black and white speckled

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

If a blood type A individual marries a blood type B individual, what are the possible blood types of their offspring?

• • A) A, B, or AB

• • B) A or B only

• • C) AB only

• • D) O only

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2