Non-Mendelian Genetics Quiz

What is the result when two heterozygous flowers with incomplete dominance for color are crossed? (Assume red is dominant and white is recessive, resulting in pink for the heterozygous condition.)

• All red flowers

• All pink flowers

• 3 red : 1 white

• 1 red : 2 pink : 1 white

In codominance, what would be the phenotype of an offspring that inherits one allele for red flowers and one allele for white flowers?

• Red flowers

• White flowers

• Pink flowers

• Red and white spotted flowers

Which of the following is an example of polygenic inheritance?

• Blood type

• Flower color in snapdragons

• Human skin color

• Pea plant height

What is a characteristic of sex-linked traits?

• They are always dominant.

• They are found on the Y chromosome.

• They are more common in males.

• They skip generations.

What is a potential consequence of inbreeding in a population?

• Increased genetic diversity

• Decreased susceptibility to diseases

• Increased occurrence of genetic disorders

• Decreased occurrence of genetic disorders

The law of independent assortment states that:

• Alleles for different traits are distributed to sex cells (&gametes) independently of one another.

• The traits of the parents are always perfectly blended in the offspring.

• Only the dominant allele will be expressed in the phenotype.

• Each trait is inherited independently based on its dominance or recessiveness.

What does it mean to be a carrier of a genetic trait?

• To show the trait physically

• To possess one dominant and one recessive allele for a trait

• To possess two recessive alleles for a trait

• To possess one recessive allele for a trait, not showing it but able to pass it to offspring

A pedigree chart is used to:

• Predict the outcome of genetic crosses

• Show the inheritance patterns of traits through families

• Determine the genetic makeup of an individual

• Illustrate the dominance of alleles in a population

Which of the following is an example of a multiple allele trait?

• Pea plant height

• Blood type in humans

• Flower color in snapdragons

• Seed texture in pea plants

Selective breeding is a process in which:

• Animals or plants are chosen for breeding based on specific genetic traits.

• Offspring are selected randomly for the continuation of the species.

• Genetic modification is used to create desired traits.

• Natural selection determines the traits of the offspring.