The Passing of Traits

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The Passing of Traits
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Traits

• Traits are passed from parent to offspring during
  reproduction.
• Traits are determined by the combination of DNA
  that is found in the nuclei of our cells.
• Animals, like you, get their DNA from each parent.

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Who do you look most like?

• The traits you have come from your biological
  parents.
• Its in your genes.
• These are not the types of Jeans you wear.

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What are Genes?

• Genes are sections of DNA that tell the cells of
  your body what types of protein to make.
• example If you have brown hair, the cells in
  your hair follicles are told by the DNA to make a
  brown color to put into that piece of hair. If
  you have blonde hair, your DNA does not tell the
  cells to make the pigment and so it is left out
  of your hair

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Two types of Genes

• Dominant
• If a dominant trait is present, it will show up.
• Example Brown eyes are dominant

• Recessive
• A recessive trait will only show up if there is
  not Dominant gene present.
• Example Blue eyes are recessive

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So what does that mean?

• If mom gives the child a gene for brown eyes and
  dad gives the child a gene for blue eyes, what
  color eyes will the child have?
• Brown eyes

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So are you dominant or recessive?

• Dominant Traits
• Freckles
• Dimples
• Round nose
• Dangling Earlobes
• Long Eye Lashes
• Bushy Eyebrows
• Widows peak
• Curly hair
• Round Chin
• Non-cleft chin

• Recessive Traits
• No Freckles
• No Dimples
• Pointed nose
• Attached Earlobes
• Short Eye Lashes
• Fine (Thin) Eyebrows
• No Widows Peak
• Straight Hair
• Square Chin
• Cleft Chin