Nonmendelian Genetics Practice quiz

Which type of inheritance causes both traits to be expressed equally in the heterozygote?

• Complete Dominance
• Incomplete Dominance
• Co-Dominance
• Sex-linked

Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).

Cross a red flower with a speckled flower. What is the phenotypic ratio?

• 2 red, 2 speckled

• 2 red, 2 blue

• 2 blue, 2 speckled

Tags

NGSS.HS-LS3-3

Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).

Cross two speckled flowers.

• 1 red, 2 speckled, 1 blue

• 2 red, 2 blue

• 2 blue, 2 speckled

• 1 red, 1 speckled, 2 blue

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Radish color is incomplete dominant, red and white are pure breeding colors. While heterozygous are purple.

Cros a red radish with a white.

• 4 purple

• 1 red, 2 purple, 1 white

• 2 red, 2 white

• 1 red, 1 purple, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Radish color is incompletely dominant, red and white are pure breeding colors. While heterozygous are purple.

Cros a red radish with a purple.

• 4 purple

• 1 red, 2 purple, 1 white

• 2 red, 2 purple

• 1 red, 1 purple, 2 white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This type of inheritance pattern is a MIXTURE of both traits.

• incomplete dominance
• co-dominance
• Mendelian dominance
• complete dominance

Tags

NGSS.HS-LS3-2

Incomplete dominance or co-dominance?
A calico cat shows both the traits for orange fur and black fur. 

• Incomplete Dominance
• Co-dominance
• Complete dominance
• Mendelian dominance

In humans, there are three phenotypes for hair--curly, wavy, and straight? Hair texture shows incomplete dominance. Suppose two people with wavy hair have a child. What is the probability the child will have straight hair?

• 100%

• 0%

• 25%

• 50%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In some carnations, flower color exhibits codominance.  Identify the correct genotypes for red, white, and speckled carnations.

• Red = RR, white = rr, speckled = Rr
• Red = RR, white = WW, speckled = rw
• Red = RR, white = ww, Speckled = Rw
• Red = RR, white = WW, speckled = RW

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The sex of a child is determined by

• whether the father's sperm contains an x or y chromosome
• whether the mother's egg contains an x or y chromosome
• the age of the parents

Tags

NGSS.HS-LS3-1