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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.
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.
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?
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
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?