Chromosomes and DNA
A Coggle Diagram about Mitosis
- Leading strand only:
- Lagging strand only:
- Enzyme helicase breaks down hydrogen bonds holding nitrogenous bases together.
- Double helix breaks down at various points - known as origin points in the shape of a replication fork.
and Replication always moves in the 3' to 5' direction. This means that it moves from the initial break in the replication fork on the leading strand to the end of the break. The fork is also antiparallel - which means that the lagging strand is moving towards the fork.
and Meiosis II
) and Structure
(Normally, the chromosomes are unwound in form and are wrapped loosely around the histones so that they can be accessed more easily.
and The chromosomes during mitosis are found in the tightly wound structure that is traditionally seen, joined in the middle by a centromere.