Cell division and chromosome errors

In summary, during mitosis, changes would have to be made to the cell to ensure that the genes in the daughter cells are exactly the same, in the same order and number on the chromosomes, as they were in the parent cell. Otherwise, during meiosis, about 40 cross-overs can occur, due to the alignment of homologous chromosomes. However, in mitosis, no rearranging takes place, except in cells with double strand breaks. These breaks are more likely to occur in regions with a long CG sequence. Additionally, enzymes are needed for the exchange of genes during crossovers.
  • #1
42
0
What changes would have to be made to a cell
so that when it divides the genes in the daughter cells
are exactly the same,in the same order and number on the chromosomes,
as they were in the parent cell?
 
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  • #2
What are you implying that happens otherwise during mitosis?

The daughter cells are always the same, only during meiosis do you get about 40 cross-overs, that occur due that the fact that homologous chromosomes are alligned next to each other.

I don't think that any rearranging takes place during mitosis, only in cells that have double strand breaks will you start seeing chromosomal translocations.
 
  • #3
Strands are more likely to break where there is a long CG sequence e.g.
CG CG CG CG CG CG CG.Why is this?
Also when crossovers occur are enzymes needed to mediate exchange of
genes?
 
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What is cell division?

Cell division is the process by which a cell reproduces and creates two identical daughter cells. This process is essential for growth, development, and repair in multicellular organisms.

What are the different types of cell division?

The two main types of cell division are mitosis and meiosis. Mitosis is the process of creating two identical daughter cells with the same number of chromosomes as the parent cell. Meiosis is the process of creating four genetically diverse daughter cells with half the number of chromosomes as the parent cell.

What are chromosome errors?

Chromosome errors, also known as chromosomal abnormalities, are changes in the number or structure of chromosomes in a cell. These errors can occur during cell division and can result in genetic disorders or developmental abnormalities.

What causes chromosome errors?

Chromosome errors can be caused by a variety of factors, such as exposure to radiation or chemicals, errors in DNA replication, or mistakes during cell division. Some chromosomal abnormalities are also inherited from parents.

Can chromosome errors be corrected?

In some cases, chromosome errors can be corrected through medical interventions such as gene therapy or assisted reproductive technologies. However, some chromosomal abnormalities cannot be corrected and may result in developmental or health issues for the affected individual.

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