Traits and Inheritance 4.2

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Traits and Inheritance 4.2
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• Gene- instructions for inherited traits. (like a
  recipe)
• Allele- different versions of the same gene.

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• Phenotype- how the trait is seen. For example the
  purple flower.
• Genotype- how the genes are written. The genotype
  for a purple flower would be Pp or PP.
• Homozygous-the genes are the same PP or pp
• Heterozygous-the genes are different Pp

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• Punnett Square- an organizer that helps display
  the combinations of offspring characteristics
  from the parents information.

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• Probability- the mathmatical chance of something
  happening.
• Incomplete dominance- when multiple alleles play
  a role in the phenotype. For example a red flower
  crossing with a white flower creating a pink
  flower. Both colors played a part in the outcome.
• Some gene influences more than one trait. For
  example the gene that influences the tigers fur
  to be white it also influences the eyes to be
  blue.

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• Some traits are a result of multiple genes
  working together. For example eye color is a
  result of 2 or more genes, that is why eye color
  varies greatly.
• Environment can also play a role in the outcome.
  For example a person may have the genetics to be
  tall but a poor diet will not allow a person to
  grow as tall.