Sequence of which of the following is used to know the phylogeny?m-RNAr-RNAt-RNADNA.

 (b):  r-RNA

Carl Woese came up with the theory of life based on his discovery that the genes encoding ribosomal RNA are ancient and distributed over all lineages of life with as we do, and had low brows, receding jaws, and high domed heads. Their cranial capacity was 1300 to 1600 cubic centimetres.

They became extinct 30000 years ago. Cro-Magnon man emerged about 34000 years ago in Holocene epoch. Thus, it is regarded as most recent ancestor of today’s man. Its face was perfectly orthognathous with an arrow, elevated nose, broad and arched forehead, moderate brow-ridges, strong jaws with man-like dentition, and a well developed chin.

Its cranial capacity was, however, somewhat more than ours, being about 1650 cc. It became extinct about 10000-11000 years.