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Transcript 
Starter
Heredity and Multiple
Births
Genetics
Everyone inherits traits from previous
generations.
• Physical Build
• Skin colour
• Hair texture and colour
• The shape and size of ears, hands and feet
• Colour and shape of eyes
• Blood type
How it Works
• At conception each baby receives 46
chromosomes
• ½ (23) from the mother ½ (23) from the
father
• Each chromosomes contains 1000s of
genes
• This is what determines the
characteristics of each person.
The characteristics we receive are a
result of one of two things
1. Matching genes from the mother and
father
Or
2. A dominant gene from one parent
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