You and your genes

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What carries the instructions that control how your body functions?
Genes.
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What controls our characteristics?
Genes and the environment.
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Genes carry the instructions to make what?
Proteins.
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How many pairs of chromosomes do we have?
23 pairs, and sex cells have 23 chromosomes(one from each pair)
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A female is XX
A male XY
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What leads to variation?
The combination of genes from his or her parents.
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Which diseases are caused by faulty versions of a gene?
Cystic fibrosis, Huntingdon's disease
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What have identical genes?
Clones
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Example of natural clones.
Identical twins, runner and blubs.
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Where are unspecialised cells found?
In the human embryo and adults.
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What type of cells can embryonic stem cells turn into?
All cell types
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What type of cells can adult stem cells turn into?
Only some cell types
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What is the structure of DNA?
It is coiled and packed into chromosomes.
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What are Functional proteins?
They enable the body to function e.g enzymes hormones
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What are Structural proteins?
They give the body structure, rigitdy and strength e.g. collagen, keratin
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What are different versions of a gene called?
Alleles
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Can two alleles, in a pair, be the same or different?
Yes
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What has 23 chromosomes?
Sex cells; eggs and sperm one from each pair
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At fertilization, what does an egg and sperm produce together?
A zygote.
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What genes does a human baby have?
A combination of its mother and father.
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Other cards in this set

Card 2

Front

What controls our characteristics?

Back

Genes and the environment.

Card 3

Front

Genes carry the instructions to make what?

Back

Preview of the front of card 3

Card 4

Front

How many pairs of chromosomes do we have?

Back

Preview of the front of card 4

Card 5

Front

A female is XX

Back

Preview of the front of card 5
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