Download Chromosomes, Genes and DNA

Biology
Genetics
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What are little girls and boys made of?
Sugar and spice and everything nice;
that’s what little girls are made of.
Slugs and snails and puppy dogs’ tails;
that’s what little boys are made of.
What are little girls and boys really made of?
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Inherited characteristics
What makes this baby human? What determines its gender?
In all living things, inheritable characteristics are passed
on by genes that they inherit from their parents.
.
Where are genes found?
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What are chromosomes?
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What are chromosomes?
Genes are found on chromosomes which are located in
the nucleus of every cell.
A gene
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Human chromosomes
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Human chromosomes
How many pairs of
chromosomes are there in
human body cells?
23 pairs of chromosomes
You inherit half your chromosomes from
your mother and half from your father.
How many chromosomes do you inherit from each parent?
23 unpaired chromosomes
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What is DNA?
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Chromosomes
Chromosomes are made of long strands of
DNA wrapped around protein
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What is DNA?
DNA stands for
deoxyribonucleic
acid.
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What’s the order?
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• Can you explain what an inheritable
characteristic is and give examples?
• Can you explain what a non inheritable
characteristics and give examples?
• What controls our inheritable characteristics?
• Where are genes located?
• How many pairs of chromosomes are located in
the nucleus of our cells?
• What are chromosomes made of?
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