Example 2: A black cat (BB) is crossed with a tabby cat (BT). Show all the possible genotypes and phenotypes from this cross. Show all your work, include a regular Punnett Square and one
with superscripts

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.

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?