The “backbones” of the macromolecules of life are made of what element?

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

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.

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation