When two lineages split from a common ancestor, each accumulates different mutations over long periods of time. The number of mutations is proportional to
the length of time that the two groups have been genetically separate.
A scientist studies corresponding genes in two species. Which data would be
most useful for determining the time when the split from the common ancestor
occurred?
a. mutation rate and the number of mutations in each sequence
b. mutation rate and the number of nucleotides in each sequence
c. mutation rate and the number of nucleotides that differ between the two
sequences
d. the number of repeated nucleotides and their specific locations in the two
sequences

What is a cordon and where is it found

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above