A. Doing radioactive dating
B. Comparing embryo morphology
C. Looking for structural and genetic similarities
D. Comparing their fossil records
2007-07-02 04:11:00 · 4 answers · asked by chrisdesign40 1 in Science & Mathematics ➔ Biology
C is the best answer. If they are modern day, radioactive dating does nothing for you. Embryo morphology can be deceiving and it depends on their stage, and fossil records may not even be present, and if they are, it doesn't have a lot of bearing on how related they are.
2007-07-02 04:14:08 · answer #1 · answered by btpage0630 5 · 2⤊ 0⤋
Definitely C - Looking for structural (i.e. on a protein level) and genetic (i.e. gene sequence and shared homology) similarities.
The second part is easily achieved by genomic sequencing (especially now that the human genome has been fully sequenced). The first bit is more complicated, as the "proteome" of an organism is not always well known.
2007-07-02 13:19:28 · answer #2 · answered by Jesus is my Savior 7 · 0⤊ 0⤋
Ideally, to establish relations between two organisms, morphological (form, structure), molecular (DNA sequencing) and possibly other (behavioral etc.) analysis should be combined to see if they are on the same evolutionary "clade" or "branch" or not. See "Cladistics".
So "C" is the best answer.
2007-07-02 11:26:51 · answer #3 · answered by Erik Van Thienen 7 · 0⤊ 0⤋
all of the above, though you would be doing a) on the d)
2007-07-02 11:14:52 · answer #4 · answered by Anonymous · 0⤊ 2⤋