Cell Division and Genetics 0.0 / 5 ? BiologyGeneticsGCSECCEA Created by: annaquinnCreated on: 27-05-18 13:08 What is Mitosis? Cell division 1 of 28 What are features of these cells? Cell function remains the same, the DNA does not change and they are genetically identical 2 of 28 Name the 3 steps of mitosis. 1.Chromosones duplicate 2.Chromatids line up at equator 3.Chromtatids start to seperate 3 of 28 Why is mitosis necessary? For growth, repair and replacement of cells 4 of 28 How do plants reproduce? Asexual reproduction 5 of 28 When humans want to make new plants, what are two methods of doing so? 1. Cuttings 2. Tissue culture 6 of 28 What is an important feature of these 'clones'? They are genetically identical 7 of 28 Name 3 advantages of cloning plants. 1. Only 1 parent 2. Fast process 3. Has desirable features 8 of 28 Name 2 disadvantages of cloning plants. 1. Lack of variation 2. Less disease resistant 9 of 28 What is cancer? Uncontrolled cell division 10 of 28 What are 3 causes of cancer? 1. UV radiation 2. Chemicals in cigarettes 3. Viruses 11 of 28 Name the 2 types of cancer. Benign and Malignent 12 of 28 What is benign cancer? Encapsulated cells, does not spread 13 of 28 What is malignent cancer? Cells that break off from the main tumour, spread throughout the body 14 of 28 Which one is more dangerous? Malignent 15 of 28 Name the 3 treatments for cancer. 1. Surgery 2. Chemotherapy 3. Radiotherapy 16 of 28 What is meiosis? Reductive division in the sex organs 17 of 28 What are the sex organs called? Gametes 18 of 28 What is fertilisation? When the 2 nuclei of the gametes fuse together 19 of 28 What type of cell is a gamete? Haploid 20 of 28 What type of cell is a normal body cell? Diploid 21 of 28 What is monohybrid? the inheritance of one feature 22 of 28 What is an allele? 2 different forms of the same gene 23 of 28 What is a dominant allele? This type of allele will always be expressed in the phenotype 24 of 28 What is the phenotype? Physical appearance 25 of 28 What is a recessive allele? This type of allele will only be in the phenotype when the genotype is homozygous recessive 26 of 28 What is the genotype? The amount of alleles present 27 of 28 What is a gene? DNA that codes for one particular protein 28 of 28
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