PLZ WILL BRAIN LIST 15) describe "variation at the heart of evolution"?
16) What are DNA sequences used to 17) Where is an outgroup placed on a phylogenetic tree?​

15) ans :the variation at the heart of evolution in gently variation mutation that can be passed from the one generation to the test .16) ans : DNA square stone Sing is a laboratory technique used used to determine the exact sequence of waste a c g and T in a day and molecules the DNA base carries the information on sale need to assemble protein and RNA molecules D and a second information is important to scientist investigating the function of ganes. 17) ans :Many fhyogenies Genesis also includes in out group - A taxon outside the group of interested all the members of the group of interested are more closely related to each other they they are to the out group has them out group stem from the base of the tree.

Ithink that b is correct but just in case wait to see if someone else answers