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Ch14 Cell Division - Coggle Diagram
Ch14 Cell Division
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Cancer
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Malignant tumours Cancer results in an uncontrolled multiplication of abnormal cells. These abnormal cells form a magnificent tumour
Causes of cancer cancer is caused when normal genes are altered to form cancer-causing genes, These alterations are brought about by cancer-causing agents called carcinogens.
Cancer is a group of disorders in which certain cells loose their ability to control both the rate of mitosis and the number of times mitosis takes place.
Meiosis
Meiosis is a form of nuclear division in which the four daughter nuclei contain half the chromosome number of the parent nucleus
Functions of meiosis It allows for sexual reproduction, involving gametes, while still maintaining the parental chromosome number
Meiosis allows for sexual reproduction In sexual reproduction, two haploid cells join to form a diploid zygote. These haploid cells are called gametes or sex cells
Meiosis allows for variation The cells resulting from meiosis are not identical. Their genes vary due to the exchange of genetic material which takes place during meiosis
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