Incomplete Dominance

In chickens, feather color is codominant.  If a black chicken BB is mated with one that is black and white (BW), what is the probability of having a chicken that is black and white?

• 1/4
• 1/2
• 3/4
• 100%

Tags

NGSS.HS-LS3-3

In some carnations, flower color exhibits codominance. When crossed, red (RR) and white (WW) flowers make speckled flowers (RW) that show both colors.
Complete a cross between a speckled flower and a red flower. Find the phenotype ratio.

• 1 red: 1 speckled
• 4 red: 0 speckled
• 4 speckled: 0 white
• 1 speckled: 1 white

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-2

A roan cow shows co-dominance in fur color (orange and white). What is the expected phenotypic ratio if a roan cow and a roan bull mate together?

• 100% Orange
• 1: Orange : 1 White
• 1 Orange: 1 Roan
• 1: Orange: 2  Roan: 1 White

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-1

1. In a certain species of animal, black fur (B) is dominant over tan fur (b).  
Which type of dominance does this cross show?

• Complete Dominance
• Incomplete Dominance
• Codominance
• Polygenic Inheritance

Snapdragon flowers come in red, pink and white.  What type of inheritance is this?

• Complete Dominance
• Incomplete Dominance
• Codominance
• Polygenic Inheritance

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

• incomplete dominance
• co-dominance
• complete dominance
• recessive pattern

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. Heterozygous individuals are grey (Bb).  
What is the genotype ratio for a cross between a grey fowl and a white fowl?

• 2 BB: 2 Bb: 0 bb
• 0 BB: 4 Bb: 0 bb
• 0 BB: 2 Bb: 2 b
• 1 BB: 2 Bb: 1 bb

Tags

NGSS.HS-LS3-3

NGSS.HS-LS3-1

_______________ results in a phenotype that is a blend of a certain trait in an allele pair.

• Co-dominance
• Sex-linked traits
• genetic mutations
• incomplete dominance

Tool used to predict the combinations of alleles in a genetic cross.

• Principle of dominance
• Independent Assortment
• Punnett square
• Codominance

Tags

NGSS.HS-LS3-3