You and Your Genes (B1)

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  • Created by: Megs555
  • Created on: 30-11-15 14:08
What determines our sex?
Male sperm cells. they have XY chromosomes. Women have XX.
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What is the chance of being a boy/girl?
50%
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What is the name of the hormone released which makes a baby develop testes?
Androgen
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What is the type of gene called?
Genotype
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What is a mutation?
An inherited change in DNA
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What is the name given to unspecialised cells?
Stem cells
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What is the Pheotype?
What you can see
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Where do chromosomes come from?
From the ovum and sperm cell.
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How many chromosomes do we have?
46 chromosomes (23 from each sex cell). 23 pairs.
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What are the disadvantages of cloning?
Clones become weaker and are more prone to mutations. Less variation (lack of genetic diversity). Overpopulation.
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What are the advantages of cloning?
Genetically identical so they will have the desired features. Organisms difficult/slow to breed can be reproduced quickly.
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What are the ethical issues with cloning?
Interferes with production of new life. Technology not developed enough for it to be a safe process.
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How does cloning work?
1. Nucleus extracted from adult body. 2. Nucleus put in empty cell with full set of genes. 3. Egg begins to develop. 4. Egg put in female.
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What are the symptoms of Huntingtons?
Affects nervous system; twitching/unable to control movements; forgetful; difficulty understanding.
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What is the chance of inheriting Huntingtons?
50%
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A dominant allele causes an effect of which disorder?
Huntingtons.
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Are there carriers of Huntingtons?
No.
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What are the symptoms of cystic fibrosis?
overactive mucus cells block lungs + tubes; chest infections; affects breathing and digestion; short of nutrients.
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Cystic Fibrosis is caused by what allele?
Recessive
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What is the chance of having CF if both parents are carriers?
25%
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Other cards in this set

Card 2

Front

What is the chance of being a boy/girl?

Back

50%

Card 3

Front

What is the name of the hormone released which makes a baby develop testes?

Back

Preview of the front of card 3

Card 4

Front

What is the type of gene called?

Back

Preview of the front of card 4

Card 5

Front

What is a mutation?

Back

Preview of the front of card 5
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