DNA Mutations and Their Effects

The video tutorial explains mutations in DNA, focusing on changes in nitrogenous base order. It covers three types of mutations: insertion, deletion, and substitution, and discusses their potential effects on the body, including the possibility of causing cancer. The tutorial emphasizes that mutations can be harmful, beneficial, or neutral.

What are the building blocks that form the rungs of the DNA ladder?

• Nitrogenous bases

• Proteins

• Carbohydrates

• Lipids

Which of the following is NOT a potential effect of a mutation?

• Harmful change

• Immediate death

• No effect

• Beneficial change

What happens during an insertion mutation?

• A base is duplicated

• A base is removed

• A base is added

• A base is replaced

In the example of an insertion mutation, which base was added to the sequence?

• Adenine

• Thymine

• Guanine

• Cytosine

What is the opposite of an insertion mutation?

• Duplication

• Substitution

• Deletion

• Translocation

In a deletion mutation example, which base was removed from the sequence?

• Guanine

• Adenine

• Cytosine

• Thymine

What occurs during a substitution mutation?

• A base is duplicated

• A base is replaced

• A base is removed

• A base is added

Which base was replaced in the substitution mutation example?

• Guanine

• Thymine

• Adenine

• Cytosine

What is a potential consequence of a harmful mutation?

• Increased intelligence

• Cancer

• Improved vision

• Stronger muscles

What is a common process where DNA mutations can occur?

• Mitosis

• Fermentation

• Photosynthesis

• Respiration