Biology- Genetics Test Review

Which of the following represents an organism that is homozygous for two genes?

• Rrss

• RrSs

• RRss

• RRSs

The allele for green pod color ( G) is dominant over the allele for yellow pod color (g). What is the genotype for a plant with yellow pods?

• GG

• gg

• Gg

• gG

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NGSS.HS-LS3-1

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An organism with two different alleles for a single trait is ____ for that trait.

• dominant

• recessive

• homozygous

• heterozygous

Which statement about mutations is correct?

• Most mutations are recessive and beneficial.

• Mutations always change the function of the proteins produced by a gene.

• Mutations are sources of variations in offspring.

• Mutations only occur when a cell is exposed to radiation.

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NGSS.HS-LS3-2

NGSS.HS-LS4-2

As the DNA in cell A in the diagram below replicates, an error occurs. During mitosis Cell B gets the original, normal chromosome. How many of the 15 cells shown contain the mutation?

• 3

• 4

• 7

• 14

Tags

NGSS.HS-LS3-1

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The diagram below shows a change in chromosomes during cell division. What process most likely caused this result?

• crossing over

• frameshift mutation

• base deletion

• base insertion

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NGSS.HS-LS1-4

How many chromosomes does a human body cell contain

• 22

• 23

• 45

• 46

Tags

NGSS.HS-LS3-1

Hemoglobin protein is produced by immature red blood cells, but liver cells from the same species do not produce hemoglobin protein. Why?

• The gene for hemoglobin is missing in liver cells.

• The gene for hemoglobin is turned off in liver cells.

• The gene for hemoglobin has mutated in liver cells.

• The gene for hemoglobin is activated in liver cells.

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NGSS.HS-LS1-1

How does the number of chromosomes in a human liver cell compare to the number of chromosomes in a human brain cell?

• The number of chromosomes in both cells is equal.

• The liver cell has fewer chromosomes than the brain cell.

• The liver cell has more chromosomes than the brain cell.

• The number of chromosomes in each cell type varies between individuals

Using special enzymes, scientists have been able to isolate the gene that controls the production of Protein A from one type of bacteria and insert the gene into another type of bacteria that does not normally produce Protein A. These bacteria then produce Protein A. What is the name of this technique?

• Cloning

• Genetic Modification

• Meiosis

• Crossing over

Tags

NGSS.HS-LS1-1

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