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Punnet Square Practice

Punnet Square Practice. Shrek is heterozygous for brown eyes and Fiona is homozygous recessive for blue eyes. .

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Punnet Square Practice

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  1. Punnet Square Practice

  2. Shrek is heterozygous for brown eyes and Fiona is homozygous recessive for blue eyes.

  3. Peter and Lois Griffin are curious about their genetic makeup. Specifically they are looking at the allele that codes for chin dimples. They found out that chin dimples are a dominant trait. What genotype could Peter be? Let’s assume Peter is homozygous dominant. Peter and Lois decided to have a baby, what are the odds, or the percent chance that their baby would have a chin dimple?

  4. Fred and Wilma have a baby named Pebbles. Fred has black hair and Wilma has red hair. Pebbles has red hair like her mom. The allele for red hair is recessive. What must her genotype be? If the allele for red hair was dominant, what would her genotype be?

  5. Mickey and Minnie Mouse decide to get married and have kids. Both Mickey and Minnie have black noses, but their baby has a pink nose. Is this possible? If yes, draw a Punnett square showing the cross.

  6. Alleles segregate separately, meaning that genes for different traits can segregate independently during the formation of gametes. This principle is known as independent assortment. What if we wanted to look at two traits, height and eye color for example. My mom may be short and have brown eyes while my dad is tall and has green eyes. The law of independent assortment allows these two traits to segregate independently so that I can have one trait from each. I am tall (like my dad) but have brown eyes (like my mom), even though neither of my parents is tall with brown eyes.

  7. In Kool-Aid, red is dominant and round is dominant.If Mr. Kool-Aid is heterozygous for both allels, what are the possible genotypes and phenotypes for Mr. Round Red Kool-Aid and Miss Square Yellow Kool-Aid?

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