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punnet squares

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punnet squares
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  • for homework, find out what this means
  • Punnet squares: dominate & recessive traits
  • hmm..
  • a punnet square is a chart that lets you see the percentage of the genotype of an offspring
  • mom, what is a punnett square?
  • that's why you and your brother are both brunettes
  • there is also something called dominate and recessive traits. The dominate always takes over the recessive.
  • Your father and I both had dominate traits for brown hair
  • I think I'm getting it, what does a punnet square look like?
  • Dominate: blue eyesRecessive: Hazel eyes
  • Father: bbMother:Bb
  • since there is dominate in two of them, 50% will be blue eyed, and 50% will be Hazel eyed
  • It is a chart consisting of four squares. Each square is 25% of the offspring. The father and mother both have 2 letters which represent the genotype. the father's genotype always goes on the top, while the mother's go on the side. look on top to see how to sort the letters into the boxes.
  • b
  • B
  • 25% Bb
  • 25% bb
  • 25%
  • 25%
  • b
  • 25% Bb
  • 25% bb
  • 25%
  • 25%
  • b
  • We call an organism’s genetic information their genotype.A trait we can observe on the body of an organism is called its phenotype.
  • The punnet square is also named after British Geneticist Reginald C. Punnett. That is how punnet squares work, thank you!
  • Punnet squares: dominate & recessive traits PRESENTING DAY
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