Chromosomes

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Meiosis: Production of gametes

In the same manner that a cell prepares for mitosis by undergoing DNA replication, a cell that will form sex cells will also go through the phases of G1, S and G2. meiosis consists of cell divisions, Meiosis I and meiosis I

Mitosis: Cell multiplication

Cell proliferation is brought about by the cell division process of mitosis.

 

Life cycle of a cell

The cell cycle is a highly conserved mechanism that controls growth and the division of a cell. It consists of a series of controlled steps through which the cell has to go in order to divide correctly.

Classes of nuclear chromosomes

Chromosomes are linear structures that occur in nuclei of cells and contain our genetic material, DNA. Some chromosomes are similar in structure, while others are different

Transmission of autosomes and sex chromosomes to the next generation

Transmission of autosomes in diploids

The male and male chromosome contribution to the next generation is equal.

Chromosomes: The numbers game

 Nuclear DNA is present as linear molecules in the nucleus of cells in structures referred to as chromosomes. In an animal body cell two sets of nuclear chromosomes occurs. Humans have 46 chromosomes in their body cells, referred to as the somatic chromosome number, represented by the 2n.