Cell Division and Genetics

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

Card 2

Front

What are features of these cells?

Back

Cell function remains the same, the DNA does not change and they are genetically identical

Card 3

Front

Name the 3 steps of mitosis.

Back

Preview of the front of card 3

Card 4

Front

Why is mitosis necessary?

Back

Preview of the front of card 4

Card 5

Front

How do plants reproduce?

Back

Preview of the front of card 5
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