Dna is copied in a cell before a cell divides. Two nucleotide strands of original double helix separate along the strands. ... They move along the DNA molecule breaking the hydrogen bonds between the complementary nitrogen bases. Replication fork- y shaped region that results when two strands separate.
Cortex
capsule
medulla
trabeculae
-chegg
The process that is not essential to the survival of an individual animal is reproduction process. Reproduction is not necessary for the survival of an individual organism, however it is very important to reproduce for the survival of the species.
The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body. Have a good day!!! Pls mark brainliest if helps!! :)