Further Exploration Concept Links for further exploration chromatin chromosome prophase diploid prometaphase spindle fibers replication eukaryote cytoplasm nucleus mitosis metaphase cytokinesis meiosis anaphase telophase. Related Concepts You have authorized LearnCasting of your reading list in Scitable.
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Register Sign In. New cells are produced even if the body does not need them. A group of cancerous cells produces a growth called a tumour. Chemicals and other agents that can cause cancer are called carcinogens. Carcinogens cause cancer by damaging DNA which can cause mutations to occur. A single mutation will not cause cancer — several are required.
For this reason, we are more likely to develop cancer as we get older. There are certain genetic factors that increase the likelihood of developing some cancers. Something that increases the likelihood of developing a disease is called a risk factor. There are several risk factors for various types of cancers. Mitosis Chromosomes carry genetic information in a molecule called DNA.
Organisms that reproduce sexually have two copies of each chromosome, one from their father and one from their mother. A special form of cell division needed to produce sex cells - for example, sperm and eggs with only one copy of each chromosome. Fusion of the sex cells creates a new individual with two copies of each chromosome.
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