Please help me answer this !

Extra points!!!

Which of the following would be least likely to support the modern concept of biological evolution? ( 2 points) a)different species of organisms with similar bone patterns b)different species of organisms with similar reproductive rates species in c)different domains with similar metabolic pathways species in d)different kingdoms with similar cellular structures.

Which codon is the code for the amino acid histidine (his)?

Ascientific idea becomes valid when it is what?