Answer: Frameshift mutations are due to either insertions or deletions of nucleotides
Explanation: Frameshift mutations result in abnormal protein products with an incorrect amino acid sequence that can be either longer or shorter than the normal protein.
It is relative dating because no scientist can tell the actually time that the layers of rocks where formed or when the fossil began to degrade
A. Genes would be the correct answer
The beginnings of a brain first become apparent around four weeks after conception when the neural plate folds to form the neural tube
