4.
a scientist discovers the fossilized remains of three unknown organisms in the same location. one is a dinosaur, one is avian, and one is reptilian. which of the following methods or techniques would the scientist not apply to discover if there is an evolutionary relationship between all three?
comparative anatomy
dna sequence comparison
embryological comparison
molecular fingerprinting
5.
a population of caribou lives on an isolated island located on the arctic circle. there has been no migration in or out of the population in the last 200 years. the recessive allele frequency for spotted fur has been 0 percent for 50 years. there was recently an increase in the recessive allele frequency. what is the most likely reason for this increase?
random mutations
natural selection
geographic isolation
immigration