During DNA replication, what occurs? A) The covalent bonds between pairs of nitrogenous bases are broken.
B) The hydrogen bonds between pairs of nitrogenous bases are broken.
C) The hydrogen bonds between sugar and phosphate molecules are broken.
D) The covalent bonds between sugar and phosphate molecules are broken.

What must be done to breed dogs for a partical trait

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.