DNA polymerase moves along the old strand in the 3'-5' direction, creating a new strand having the same 5'-3' direction.
Expression of each gene requires a unique combination of
multiple transcription factors. Expressing a gene all the time, regardless of conditions,
Pax-6 is highly conserved and shows shared evolutionary ancestry. cytoplasmic
determinants that are distributed unevenly in the unfertilized egg inductive signals from one cell to another. Gradients of molecules in developing tissues. <span>the products of regulatory genes.</span>
The Cambrian explosion. Trilobites were found because of their hard shell, unlike soft bodied creatures.