Explain it

03.04 — 2 short write-ups

Question 1 of 2

A checkpoint, not a test

Explain the protein effect

A few sentences is enough. Explain the reason in your own words.

A base substitution leaves an amino acid unchanged, but a one-base deletion changes many later amino acids. Explain why these two DNA changes can have different effects.

Think about codon meanings and how bases are grouped.

Question 2 of 2

A checkpoint, not a test

Which change can reach offspring?

A few sentences is enough. Explain the reason in your own words.

Compare a mutation acquired in a skin cell with a mutation in an egg cell. Which can be passed to a child at fertilization, and why might an inherited recessive mutation remain unseen?

Track which cell contributes DNA at fertilization, then consider a recessive allele.