Topic C - Genes Quiz Review

Two tall plants (homozygous dominant) are crossed. What are the expected phenotypes of the offspring?

• all tall plants

• all short plants

• some tall plants and some short plants

• one tall plant and the rest short plants

Which statement explains the difference between dominant and recessive traits?

• Dominant traits are observable traits that mask the recessive form of a trait, while recessive traits are masked by the dominant trait.

• Dominant traits are masked by the recessive trait, while recessive traits are observable traits that mask the dominant form of a trait.

• Dominant traits provide the genetic description of an organism, while recessive traits describe the way the organism looks and behaves.

• Dominant traits describe the way the organism looks and behaves, while recessive traits provide the genetic description of an organism.

Brown eyes (B) are dominant over blue eyes (b). Parents with the genotypes of BB and Bb have several children. What is the phenotype of the children?

• BB

• Bb

• blue eyes

• brown eyes

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

A brown rabbit and a white rabbit had 10 baby rabbits. All 10 offspring were brown. Which can most likely be inferred?

• The trait for brown fur and white fur are codominant.

• The trait for brown fur is recessive to the trait for white fur.

• The trait for brown fur is dominant over the trait for white fur.

• The traits for white and brown fur have incomplete dominance.

Tags

NGSS.MS-LS4-4

Which trait would be most influenced by lifestyle choices?

• obesity

• eye color

• blood type

• ability to roll one’s tongue

Which is most likely true if one copy of a dominant allele is present in an individual’s genotype?

• The individual will be unable to pass the trait to its offspring.

• The trait is not expressed in the individual’s phenotype.

• The trait is most likely expressed in the individual’s phenotype.

• The trait is most likely partially expressed in the individual’s phenotype.

Tags

NGSS.HS-LS1-1

If one parent has two dominant alleles for a certain trait and the other parent has two recessive alleles for the same trait, which statement best describes the offspring?

• The offspring will display the dominant phenotype.

• The offspring will display the recessive phenotype.

• The offspring will express two dominant alleles.

• The trait is most likely partially expressed in the individual’s phenotype.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Which best describes any change in DNA?

• heredity

• mutation

• inheritance

• recessive allele

Tags

NGSS.MS-LS3-1

Which statement best compares the genotype of the offspring with the genotype of the parent organism if the organism reproduces asexually?

• The genotype of the offspring is never the same as the genotype of the parent organism.

• The genotype of the offspring is always the same as the genotype of the parent organism.

• The genotype of the offspring is the same as the genotype of the parent organism one-half of the time.

• The genotype of the offspring is the same as the genotype of the parent organism one-fourth of the time.

Tags

NGSS.MS-LS3-2

Which statement explains how an organism with a genotype of Tt and an organism with a genotype of TT can have the same phenotype?

• The T allele is dominant.

• The T allele is recessive.

• The t allele is dominant.

• The t allele is recessive.