What are chromosomes?

                      Chromosomes are tiny threads that are present in all cells apart from red blood cells. They contain all the information for an entire person to develop. There are 46 chromosomes in each cell. They come in 22 pairs, plus another special pair that determine a person’s sex. Chromosomes are found in the cell nucleus, but they are not normally visible under the microscope except when a cell is dividing.

 

 

 

What are genes?

                   Genes are short sections of a chromosome. Each gene carries the instructions for a specific characteristic, such as eye colour, each carries the instructions for making a protein that will form a part of a living cell.

Many of these genes work with other genes, so it is difficult to say what effects they will have. Scientists are currently studying all the genes in a human cell, which will give them the complete blueprint for a human being.

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