Exploring Inheritance with Punnett Squares

What is a pedigree chart used for in genetics?

• To predict the weather

• To track the inheritance of traits in families

• To measure the height of plants

• To calculate the speed of animals

In a pedigree chart, what does a square represent?

• A female

• A male

• A carrier

• An affected individual

Which of the following is an example of a phenotype?

• Bb

• Blue eyes

• BB

• bb

What is the genotype of an individual who is homozygous recessive for a trait?

• BB

• Bb

• bb

• bB

In a pedigree, what does a shaded symbol typically indicate?

• The individual is deceased

• The individual is affected by the trait

• The individual is a carrier of the trait

• The individual is unaffected by the trait

If a heterozygous individual (Bb) mates with a homozygous recessive individual (bb), what is the probability of their offspring being homozygous recessive?

• 0%

• 25%

• 50%

• 75%

What is the term for the physical expression of a genetic trait, that is influenced by the environment?

• Genotype

• Phenotype

• Allele

• Chromosome

In a pedigree, how are carriers of a recessive trait typically represented?

• Half-shaded symbol

• Fully shaded symbol

• Unshaded symbol

• A symbol with a dot in the centre

What is the probability of two heterozygous individuals (Bb) having a child with a homozygous dominant genotype?

• 0%

• 25%

• 50%

• 75%

In a pedigree chart, what does a horizontal line connecting a circle and a square represent?

• Siblings

• Marriage or mating

• Parent-child relationship

• Unrelated individuals