Genetic Code & Mutations

What are the building blocks of DNA and RNA mentioned in the video?

• Adenine, thymine, cytosine, uracil

• Adenine, guanine, cytosine, uracil

• Adenine, guanine, uracil, cytosine

• Adenine, guanine, cytosine, thymine

What type of mutation does not change the protein despite a change in the DNA sequence?

• Substitution mutation

• Frameshift mutation

• Deletion mutation

• Silent mutation

What happens in a frameshift mutation?

• A base is added, but the protein remains the same.

• A base is deleted, altering the reading frame of the DNA.

• A base is substituted, changing the protein slightly.

• The DNA sequence remains unchanged.

What amino acid does the RNA codon GAG code for?

• Lysine

• Glutamic acid

• Valine

• Threonine

How does sickle cell mutation affect hemoglobin?

• It makes hemoglobin break down faster.

• It does not affect hemoglobin shape.

• It causes hemoglobin to form stiff rods.

• It increases the oxygen-carrying capacity of hemoglobin.

If I change the DNA sequence (mutation), am I really changing the genetic code (the way codons code for amino acids)?

• No, a change in the DNA sequence will not change the genetic code (how codons are read).

• Yes, a change in the DNA sequence will change the genetic code (how codons are read).