Understanding DNA Mutations and Their Effects

What is the primary focus of this lesson?

• The process of DNA replication

• How mutations in DNA can affect polypeptides

• The role of enzymes in metabolism

• The structure of RNA molecules

What is the original amino acid coded by the mRNA sequence CCC?

• Proline

• Alanine

• Arginine

• Glycine

How does the mutation change the amino acid sequence?

• It changes arginine to glycine

• It changes proline to alanine

• It changes glycine to arginine

• It changes alanine to proline

What is a key difference between glycine and arginine?

• Glycine is non-polar, arginine is basic

• Glycine is basic, arginine is neutral

• Glycine is acidic, arginine is basic

• Glycine is polar, arginine is non-polar

What is the potential effect of the mutation on the protein's function?

• The protein gains a new function

• The protein becomes more effective

• The protein's function remains unchanged

• The protein becomes less effective or non-functional