Homologous chromosomes are paired

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Which of these is not a nucleotide base found in dna?