Reading Quiz Honors Pp. 516-517

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1. Transposons have been discovered in other types of organisms in addition to the original discovery in corn.

True

False

Bacteria, fruit flies, and humans.

Explanation

Bacteria, fruit flies, and humans.

About This Quiz

Quiz on types of gene mutations and transposons.

2. What first name or nickname would you like us to use?

You may optionally provide this to label your report, leaderboard, or certificate.

2. What are these "jumping genes" known as today?

Introns

Exons

Transposons

Mutagens

3. Most errors in DNA coding are corrected as the DNA polymerase proofreads the new strand as it forms.

True

False

This is a job of DNA polymerase in addition to joining nucleotides together.

Explanation

This is a job of DNA polymerase in addition to joining nucleotides together.

4. All genetic material is in a fixed position on a chromosome.

True

False

Believed to be true but disproved by Barbara McClintock.

Explanation

Believed to be true but disproved by Barbara McClintock.

5. Using the chart in your book on page 507, answer the following:

A DNA sequence in a gene originally reads "CGA" It is transcribed into mRNA which then codes for an amino acid. If the DNA is changed to "CAA" what effect will be seen?

No change in the amino acid

The amino acid alanine will be changed to valine

Instead of an amino acid, there will be a stop codon.

This is a missense mutation which results in a change in the amino acid coded for.

Explanation

This is a missense mutation which results in a change in the amino acid coded for.

6. A change in a single nucleotide in a gene will always result in an amino acid change.

True

False

Because there are 61 codons and only 20 amino acids, there is more than one codon that codes for some amino acids.

Explanation

Because there are 61 codons and only 20 amino acids, there is more than one codon that codes for some amino acids.

7. Which would result in a more drastic change in the protein formed?

Frameshift mutation

Point mutation

Both are equally as bad

Frameshift because every amino acid from the point of the insertion or deletion is changed.

Explanation

Frameshift because every amino acid from the point of the insertion or deletion is changed.

8. Which item below is NOT a type of gene mutation?

Frameshift

Point

Substitution

Deletion

Translocation

The first four terms all refer to changes in a gene due to inserting, deleting, or substituting a nucleotide base.

Explanation

The first four terms all refer to changes in a gene due to inserting, deleting, or substituting a nucleotide base.

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Reading Quiz Honors Pp. 516-517

1. Transposons have been discovered in other types of organisms in addition to the original discovery in corn.

2.

What first name or nickname would you like us to use?

2. What are these "jumping genes" known as today?

3. Most errors in DNA coding are corrected as the DNA polymerase proofreads the new strand as it forms.

4. All genetic material is in a fixed position on a chromosome.

5. Using the chart in your book on page 507, answer the following:A DNA sequence in a gene originally reads "CGA" It is transcribed into mRNA which then codes for an amino acid. If the DNA is changed to "CAA" what effect will be seen?

6. A change in a single nucleotide in a gene will always result in an amino acid change.

7. Which would result in a more drastic change in the protein formed?

8. Which item below is NOT a type of gene mutation?

5. Using the chart in your book on page 507, answer the following:

A DNA sequence in a gene originally reads "CGA" It is transcribed into mRNA which then codes for an amino acid. If the DNA is changed to "CAA" what effect will be seen?