Heredity Unit - Concept 2: Complex Inheritance Patterns

Why are linked genes inherited together?

• Because they are transcribed simultaneously.

• Because they are located close together on the same chromosome.

• Because they are dominant.

• Because they induce a similar phenotype.

A child born to a parent with straight hair and a parent with curly hair will usually have wavy hair (hair that is a little curled). This is due to the expression of both curly and straight alleles. What type of complex inheritance pattern explains this?

• Multiple alleles

• Incomplete dominance

• Codominance

• Linked genes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are linked genes? (Choose all that apply.)

• Genes that are relate in terms of the phenotype they induce.

• Genes that are likely to be inherited together.

• Genes that sit on the same chromosome.

Identify the type of inheritance pattern being described: A cross between a plant with red flowers and a plant with white flowers produces only plants with pink flowers.

• Codominance

• Polygenic inheritance

• Incomplete dominance

• Linked genes

In the pictured diagram, which pair of genes would most likely be inherited together?

• A and B

• A and C

• B and C

• D and E

Tags

NGSS.HS-LS3-1

Identify the type of inheritance pattern being described: When certain types of long and short-furred rabbits are bred, their offspring will all have medium-length fur.

• Codominance

• Polygenic inheritance

• Incomplete dominance

• Linked genes

In humans, blonde hair and blue eyes are commonly inherited together. This represents which type of complex inheritance pattern?

• Linked genes

• Sex-linked traits

• Codominance

• Incomplete dominance

A rose shows incomplete dominance; when a red-flowered plant is bred with a yellow-flowered plant, the offspring are orange with the phenotype RR'. If these orange individuals are crossbred, what will be the phenotypic ratio of their offspring?

• 1:2:1 red, orange, yellow

• 1:2:1 red, spotted, yellow

• 3:1 red, yellow

• 2:1 orange, red

Which is NOT an example of incomplete dominance?

• A pink flower produced from red and white flowers.

• A red and white speckled flower produced from red and white flowers.

• A dog with a long tail and a dog with a short tail produce puppies with medium-length tails.

• A white horse and a chestnut (dark brown) horse produce a light brown foal.

Which of the following blood types is NOT a dominant trait?

• Type A

• Type B

• Type O

• Type A and B