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  • This is Gregor Mendal. He's the father of heredity. Mendal created the laws of inheritance. He studied inheritance of traits through pea plants.
  • Genetics are traits passed from parent to offspring. You can usually find a variety in sexual reproduction offsprings. There are dominant and recessive traits.
  • Dominant traits will always be present if one or both parents have a dominant trait. The allele will be shown as a capital letter (ex. R).
  • There is also co-dominant traits. Co-dominant traits are traits that are both dominant so both of them will show. Neither of them can mask each other. The allele for co-dominance will have both capital letters that aren't the same (ex. RW).
  • Recessive traits will always be masked by dominant traits. The allele for recessive traits will be shown as a lower case letter (ex. r). 
  • This is Reginald Punnett, creator of the punnett squares. Punnett squares are a chart of possible genetic outcomes for two parents. With this cart, you can see if the offspring(s) will be homozygous or heterozygous.
  • R  r 
  • Rr
  • RR
  • R             R 
  • Homozygous, or pureblred, is two of the same genes for a trait (ex. RR or rr).
  • RR
  • Rr
  • This is an example of a punnett square. By observing the cart, you can see one of the parents is homozygous and the other is heterozygous. The offspring will have 50% chance of being homozygous and 50% chance of being heterozygous.
  • Heterozygous, or hybrid, is one of each trait (ex. Rr).
  • Scientists will also use a pedigree. A pedigree is biological family tree that is used to track inherited traits especially diseases. (I can not upload a picture or create one due to the limits of the Story Board website).
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