Exploring Punnett Squares and Genetic Traits

What analogy is used to explain different alleles in genetics?

• Different channels on a television

• Different colors in a paint set

• Different flavors in an ice cream shop

• Different books in a library

Which alleles have more influence on the genetic outcome?

• Recessive alleles

• Both have equal influence

• Neither have any influence

• Dominant alleles

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How many alleles does each parent contribute to their offspring in a Punnett square?

• Four alleles each

• Two alleles each

• One allele each

• Three alleles each

What is the genotype of a father with brown eyes but carries a recessive allele?

• BB

• Bb

• bb

• bB

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NGSS.HS-LS3-2

What does a homozygous recessive genotype look like?

• Bb

• bB

• BB

• bb

In a Punnett square, what does each square represent?

• A definite phenotype

• A possible genotype

• A random mutation

• An environmental factor

What is the probability of offspring having brown eyes if one parent is heterozygous brown (Bb) and the other is homozygous recessive (bb)?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-3

What percentage does each square in a Punnett square represent in terms of probability?

• 50%

• 25%

• 75%

• 10%

If both parents have a recessive allele for blue eyes (bb), what is the probability of their offspring also having blue eyes?

• 50%

• 25%

• 100%

• 75%

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NGSS.HS-LS3-1

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NGSS.HS-LS3-3

How can you apply the concept of Punnett squares to determine possible eye colors in your family?

• By using known phenotypes to infer possible genotypes

• By guessing the phenotypes of your grandparents

• By knowing the exact genotypes of your parents

• By ignoring all known genetic information

Tags

NGSS.HS-LS3-1

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