Chromosomes pass genetic information from one cell to another in cell generation. (j) Explain the relationship between DNA, genes, and chromosomes during the passing of genetic information. (k) During the passing of genetic information from one generation to the next via chromosomes, nondisjunction can occur, interrupting the process. Describe the events that take place during nondisjunction.
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Process of passing information from one cell generation to another cell generation is called heredity .
Each cell consists of nucleus which further consists of DNA , genes and chromosomes.
Chromosomes are thread like structures which consists of genes which lie on the chromosomes in the form of beads .These genes consists of DNA which contains all information and this cell on division divides in two and then pass into the next generations.
Two types of division occur in the cell i.e. Mitosis (Equilateral division ) and Meiosis (Reductional division ) .
In germ cells meiotic division occurs and then half of the chromosomes go to one cell and then mitotic division occurs and then cell gets doubled .
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