Identify and illustrate changes in DNA and evaluate the significance of these changes.
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Q 1/12
Score 0
Different types of mutations can occur in DNA. The diagram represents a type of mutation. Which statement describes the mutation in the diagram?
30
A silent mutation results in the insertion of a different amino acid
A base is inserted into one strand of the DNA
A deletion of a cytosine base occurs
A substitution occurs with the adenine base
Q 2/12
Score 0
Which of these is the direct result of an error in the transcription of a DNA nucleotide?
30
A codon sequence is incorrect
The nuclear membrane is ruptured
Transportation of mRNA does not occur
Amino acids do not bond to tRNA
12 questions
Q.
Different types of mutations can occur in DNA. The diagram represents a type of mutation. Which statement describes the mutation in the diagram?
1
30 sec
B.6.E: Changes In DNA
Q.
Which of these is the direct result of an error in the transcription of a DNA nucleotide?
2
30 sec
B.6.E: Changes In DNA
Q.
The survival of a species depends on its ability to adapt to changes in the environment. A species must be capable of surviving and reproducing despite changes to food sources, climate, or threats from predators. Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment?
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30 sec
B.6.E: Changes In DNA
Q.
The table shows a DNA sequence and three types of mutations that can change the DNA sequence. Which mutation will cause translation to stop?
4
30 sec
B.6.E: Changes In DNA
Q.
A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occurs and causes the synthesis of the segment as shown. Which is the new peptide chain when the new DNA segment is translated?
5
30 sec
B.6.E: Changes In DNA
Q.
In the 1960s the molecular biologist George Streisinger developed the strand-slippage hypothesis. Streisinger noticed that mutations occurred in areas of DNA that contained many repeated sequences. When a strand-slippage error occurs, an insertion mutation can result. How does the insertion mutation affect the DNA?
6
30 sec
B.6.E: Changes In DNA
Q.
Early-onset Alzheimer’s disease affects people under the age of 65. Less than five percent of people who are diagnosed with Alzheimer’s disease have this type. Many cases of early-onset Alzheimer’s disease are inherited, a type known as familial Alzheimer’s disease (FAD). Which statement is best supported by this information?
7
30 sec
B.6.E: Changes In DNA
Q.
Sickle-shaped red blood cells result from a mutation in the gene that codes for hemoglobin. This mutation results in sickle-cell anemia. A partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia are shown below. What type of mutation is depicted in this sequence?
8
30 sec
B.6.E: Changes In DNA
Q.
A codon chart is shown below. Which of these changes to the DNA triplet 3’ GCT 5’ will affect the protein produced?
9
30 sec
B.6.E: Changes In DNA
Q.
A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?
10
30 sec
B.6.E: Changes In DNA
Q.
A mutation in which types of cells would only affect the organism and not future generations?
11
60 sec
B.6.E: Changes In DNA
Q.
A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky, rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood throughout the body. A single base mutation is responsible for these irregularly shaped blood cells.Which of these mutations most likely results in the mutated hemoglobin gene?
