Self-assess Pedigrees and Punnett squares

In a pedigree chart, what does a filled square represent?

• A female carrier of a trait

• A male affected by a trait

• A female affected by a trait

• A male carrier of a trait

How are A-26 and A-4 related?

• Siblings

• Marriage or mating

• Offspring

• Twins

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many generations are shown?

• 1

• 2

• 3

• 4

In a Punnett square, what does the genotype "Rr" signify?

• Homozygous dominant

• Homozygous recessive

• Heterozygous

• Phenotype

If one heterozygous individual (Tt) and one homozygous dominant individual (RR) for a trait are crossed, what is the probability of their offspring being homozygous dominant?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

When analyzing a Punnett square for a single gene trait with alleles A (dominant) and a (recessive), what would be the phenotype of an offspring with the genotype "aa"?

• Will express the dominant trait

• Will express the recessive trait

• Cannot be determined without more information

• Will be a carrier of the dominant trait

Tags

NGSS.HS-LS3-1