MUTATION

DNA molecule segment is : TTACGCAAG

The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.

• Substitution

• Deletion

• Insertion

• Inversion

A mutation is defined as:

• A change in the cell's structure

• Anything that changes in an embryo

• Any change in the physical features of a human

• A change in the DNA sequence

Why are insertion and deletion (frameshift) mutations so harmful?

• They change all of the codons from the mutation on down the line, which changes the amino acid sequence

• They insert things that an organism doesn't need.

• They often delete things that organisms need.

• Insertion and deletions are not any more harmful than substitution mutations.

Are all mutations bad?

• Yes
• No

Part of a chromosome is repeated

• Inversion - Chromosomal Mutation

• Substitution - Gene Mutation

• Deletion - Gene Mutation

• Duplication - Chromosomal Mutation

What type of chromosomal mutation is shown in the picture?

• Inversion

• Translocation

• Deletion

• Duplication

The chromosomal mutation shown in the image is a

• deletion

• duplication

• inversion

• translocation

Occurs when a person has an extra chromosome on the 21st pair.
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• Down syndrome
• Huntington's disease
• Parkinson's disease
• Zika syndrome

A genetic disease caused by a point mutation in which a single based is substituted; results in a defective hemoglobin protein

• Sickle Cell Disease

• Cystic Fibrosis

• Tay-Sachs disease

• Trisomy 21

Chemical or physical agents in the environment that may cause mutations are called:

• mutants

• mutagens

• chromosomal mutations

• missense mutations