Exploring Non-Mendelian Inheritance: Incomplete Dominance and Codominance

What is the term used when a dominant allele does not fully express over a recessive allele, resulting in a blend of traits?

• Epistasis

• Polygenic inheritance

• Incomplete dominance

• Codominance

What color are the offspring of a red snapdragon and a white snapdragon?

• Pink

• Speckled

• Red

• White

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In codominance, what is the phenotype of offspring from a black chicken and a white chicken?

• Black

• Black and White

• White

• Grey

Tags

NGSS.HS-LS3-1

How are different letters used in genetic representation?

• To indicate dominant and recessive alleles

• To differentiate between incomplete dominance and codominance

• To mark epistatic interactions

• To show polygenic inheritance

What does a Punnett square illustrate?

• The environmental impact on genetics

• The exact phenotype of offspring

• The possible genotypes of offspring

• The number of chromosomes in a cell

Which of the following traits is an example of polygenic inheritance?

• Snapdragon color

• Chicken color

• Human height

• Llama wool color

Tags

NGSS.HS-LS3-3

What environmental factor can influence human height?

• Humidity

• Temperature

• Nutrition

• Altitude

What is epistasis?

• One gene's expression depending on another gene

• Two alleles blending to form a new phenotype

• Multiple genes influencing a single trait

• A single gene controlling multiple traits

What happens to a llama's wool color if it inherits the cc genotype for the epistatic gene?

• It becomes brown

• No pigment is expressed

• It becomes speckled

• It becomes black

Tags

NGSS.HS-LS3-1

Why is it important not to assume non-Mendelian inheritance in problem-solving?

• To avoid confusion with polygenic traits

• Because Mendelian inheritance is more common

• Unless specific information indicates otherwise

• Because non-Mendelian traits are rare