The valence electrons are 1. found outside the electron cloud 2. located closest to the nucleus 3. held most loosely by the atom 4. held most tightly by the atom

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

What amino acid is coded for by this sequence after the mutation

Give an example of a trait that is controlled by more than one gene.