The portal has been deactivated. Please contact your portal admin.

Lesson Worksheet: Genetic and Chromosomal Mutations Biology

In this worksheet, we will practice defining what a mutation is, recognizing various types of mutations, and stating some potential impacts of mutations.

Q1:

True or False: If a mutation occurs in a normal body (somatic) cell of an organism, that mutation will be passed on to that organism’s offspring.

  • ATrue
  • BFalse

Q2:

Which of the following correctly differentiates between spontaneous and induced mutations?

  • AInduced mutations are caused by errors in natural biological processes, whereas spontaneous mutations are caused by mutagenic agents in the environment.
  • BSpontaneous mutations are caused by errors in natural biological processes, whereas induced mutations are caused by mutagenic agents in the environment.

Q3:

A normal human cell contains 46 chromosomes in total, 23 inherited from the father and 23 inherited from the mother. Each group of 23 chromosomes is called a set of chromosomes. A normal human cell, therefore, has two sets of chromosomes. In some organisms, entire chromosome sets have been duplicated. What term is given to a cell in an organism that has more than two sets of chromosomes?

  • AHaploid
  • BHyaloid
  • CPolyploid
  • DMyxoid
  • EDiploid

Q4:

Which of the following types of mutations can cause a frameshift in a DNA sequence?

  • AInsertion and deletion
  • BDeletion only
  • CInsertion and inversion
  • DSubstitution and saturation
  • ESubstitution only

Q5:

Which of the following best defines mutation?

  • AAn alteration in the sugar-phosphate backbone of a DNA molecule
  • BA change in the nucleotide base sequence of a DNA molecule
  • CThe replication of a section of DNA
  • DThe gain of an additional characteristic by an organism
  • EA random change in the physical appearance of an organism

Q6:

Which of the following is not a type of genetic mutation?

  • ADeletion
  • BDifferentiation
  • CInsertion
  • DSubstitution

Q7:

The diagram provided shows a simplified outline of the different types of gene mutations that can occur in a strand of DNA.

Which diagram, 1, 2, or 3, demonstrates an insertion mutation?

Q8:

The diagram provided shows a simplified outline of the different types of gene mutations that can occur in a strand of DNA.

Which diagram, 1, 2, or 3, demonstrates a deletion mutation?

Q9:

The diagram provided shows a simplified outline of the different types of gene mutations that can occur in a strand of DNA.

Which diagram, 1, 2, or 3, demonstrates a substitution mutation?

Q10:

The diagram provided shows a simplified outline of the different types of chromosomal mutations that can occur. Which diagram (1, 2, or 3) demonstrates an inversion mutation?

This lesson includes 37 additional questions for subscribers.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.