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Genetics Post Test
March 2, 2021
Welcome to your Genetics Post Test
The caterpillars of monarch butterflies eat milkweed leaves. Milkweed leaves contain sap that is toxic to many animals but not to monarch butterfly caterpillars. This sap makes the monarch butterfly caterpillars toxic to predators and protects them from being eaten. Which of these is an inherited trait of monarch butterfly caterpillars?
A. The size of the milkweed leaves that the caterpillars eat
B. The ability of the caterpillars to eat toxic leaves without being harmed
C. The number of milkweed leaves the caterpillars eat each day
D. The number of leaves on the milkweed plants that the caterpillars visit each summer
Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?
A. A new population can be established by a single individual in a relatively short period of time.
B. All the members of a population are genetically very similar and less able to survive environmental changes.
C. They are smaller than lizards that reproduce sexually.
D. They are more likely to develop a variety of tail lengths.
Three cousins have a similar appearance but different face shapes. Which of these cell components are most involved in determining the basic shape of each girls face?
A. Genes, chromosomes, and nucleus
B. Cytoplasm, chloroplasts, and genes
C. Vacuoles, nucleus, and chromosomes
D. Chromosomes, chloroplasts, and vacuoles
Mitosis is responsible for the growth and replacement of somatic (body) cells. The end result of mitosis is ______
A. 4 daughter cells with half the chromosomes of the parent cells
B. 2 daughter cells with half the amount of chromosome as the parent cells.
C. 4 identical daughter cells
D. 2 identical daughter cells
What process and type of resulting cells is represented in the diagram above?
A. mitosis, gametes
B. mitosis, body cells
C. meiosis, gametes
D. meiosis, body cells
Wheat was one of the first plant crops that humans domesticated. In the process of domestication, the wild form of wheat was eventually changed into a form more suited to human agricultural practice. Early farmers most likely used seeds only from wheat plants with ____
A. larger grains that could produce more food per plant
B. fewer bees around them
C. flowers that more people found attractive
D. animals didn't dig up
Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?
A. 75% hairy stems: 25% hairless stems
B. 100% hairy stems
C. 100% hairless stems
D. 50% hairy stems: 50% hairless stems
Albinism is a recessive condition. Which circle graph shows the genotype probability when an albino female mates with a male that is heterozygous for the albinism trait?
A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?
A. The siblings of the organism
B. The offspring of the organism
C. The other organisms living nearby
D. The mating partner of the organism
The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year. What causes this change in fur color?
A. The alleles for fur color change as the arctic fox grows older.
B. Gene expression for fur color is regulated by latitude
C. The arctic fox has two traits for fur color that are determined at birth.
D. Gene expression for fur color is regulated by temperature.
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