Genetics Quiz

Which of the following explains how a child might have blue eyes?

• The child received one set of genes for blue eyes from their mother.

• The gene for eye color changes depending on the environment.

• The child received the genes for blue eyes from both of the parents.

• The gene for blue eyes is always dominant over all other eye colors.

Tags

NGSS.MS-LS3-2

In tulips, alleles for purple petals are dominant to alleles for white petals. Which of the following explanations BEST describes what color petals the tulip will have if they inherit one dominant allele for purple petals and one recessive allele for white petals?

• The tulip will be pink petals because the two alleles blend to make a new trait.

• The tulip will have an unknown color of petals because petal color does not have a consistent pattern of inheritance.

• The tulip will have white petals because the allele for white petals is recessive, and the recessive allele always masks the dominant allele.

• The tulip will have purple petals because the allele for purple petals is dominant, and the dominant allele always masks the recessive allele.

Tags

NGSS.MS-LS4-4

Use the information to answer the following question. Nose color is an inherited trait in dogs. Two puppies from the same set of parents have different color noses. One puppy has a pink nose and one puppy has a black nose. How can puppies from the same set of parents have different color noses?

• The pink-nosed puppy and the black-nosed puppy must not be related.

• The pink-nosed puppy has a different number of chromosomes than the black-nosed puppy.

• The pink-nosed puppy and the black-nosed puppy inherited different combinations of the genes for nose color from their parents.

• The pink-nosed puppy inherited all of its genes from its mother, and the black-nosed puppy inherited all of its genes from its father.

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Use the information to answer the following question. A student is doing a genetics experiment on beetles. A pure green beetle is crossed with a pure brown beetle. The student repeats this experiment ten more times. Every time the student performs this cross, all of the offspring are green. What can the student conclude?

• The gene for green color is dominant over the gene for brown because all the beetle offspring have a brown phenotype.

• The gene for green color is dominant over the gene for brown color because all the beetle offspring have a green phenotype.

• The gene for brown color is dominant over the gene for green color because all of the beetle offspring have a brown genotype.

• The genes for green and brown color are equally expressed because half the beetle parents have a green phenotype and half the beetle parents have a brown phenotype.

Two students were discussing inheritance in science class. Both students knew that genes and chromosomes had something to do with human inheritance. The students came up with four explanations of what genes do in the process of inheritance. Which is the BEST explanation of what genes do?

• Genes directly cause physical changes in our cells’ nuclei. The nuclei then produce our traits.

• Genes make chromosomes and chromosomes make up our organs, which give us the traits we inherit.

• Genes are part of chromosomes and genes provide the instructions to cells on how to make our traits.

• Genes directly cause physical changes to our chromosomes; then the chromosomes produce our traits.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS3-2

Which table correctly describes genotypes and phenotypes?

• A

• B

• C

• D

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Use the information and Punnett square to answer the following question. The result of a monohybrid Punnett square is shown. Based on the results, which statement must be TRUE of the parents in this cross?

• The parents must both have one recessive gene.

• The parents have the same genes as one another.

• The parents must both have at least one dominant gene.

• It is not possible to determine anything about the parents’ genes.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Use the information and Punnett square to answer the following question. Imagine brown eyes are dominant over green eyes. The Punnett square shows a cross between two parents with brown eyes. What is the probability that the parents will produce an offspring with green eyes?

• 100%

• 50%

• 25%

• 0%

Tags

NGSS.MS-LS4-4

In dogs, brown fur color is dominant to blonde. If two heterozygous parents are being bred, what percent of the offspring are expected to have blonde fur?

• 100%

• 75%

• 50%

• 25%

Use the information and Punnett square to answer the following question. The Punnett square shows the results of a genetic cross. The mother is heterozygous for the trait shown. The father is homozygous recessive for the trait.

• There is a 100% chance that the offspring will have the same phenotype as the mother.

• There is a 100% chance that the offspring will have the same phenotype as the father.

• There is a 50% chance that the offspring will have the same phenotype as the father.

• There is a 25% chance that the offspring will have the same phenotype as the mother.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2