Question

1. give the possible genotypes for each trait based on the information provided in the chart.

purebred squarepants - ____ blue body - ____
hybrid round eyes - ____ purebred roundpants - ____
heterozygous squarepants - ____ homozygous yellow body - ____

1. give the phenotypes for each genotype based on the information provided in the chart.

ss - ____ yy - __ rr - ____
rr - ____ ss - __ yy - ____
characteristic dominant gene recessive gene
body shape squarepants (s) roundpants (s)
body color yellow (y) blue (y)
eye shape round (r) oval (r)

Explanation:

Step1: Recall Genotype-Phenotype Rules

For a trait, dominant allele (capital letter) masks recessive (lowercase). Purebred (homozygous) has same alleles, hybrid/heterozygous has one dominant and one recessive.

Step2: Solve for Each Trait (Question 3)

• Purebred squarepants: Squarepants (S) is dominant, purebred (homozygous) → \( SS \)
• Blue body: Blue (y) is recessive, so homozygous recessive → \( yy \)
• Hybrid round eyes: Round (R) is dominant, hybrid (heterozygous) → \( Rr \)
• Purebred roundpants: Roundpants (s) is recessive, purebred → \( ss \)
• Heterozygous squarepants: Squarepants (S) dominant, heterozygous → \( Ss \)
• Homozygous yellow body: Yellow (Y) dominant, homozygous → \( YY \)

Step3: Solve for Phenotypes (Question 4)

• \( SS \): Dominant (S) → Squarepants
• \( Yy \): Dominant (Y) → Yellow body
• \( rr \): Recessive (r) → Oval eyes
• \( Rr \): Dominant (R) → Round eyes
• \( ss \): Recessive (s) → Roundpants
• \( YY \): Dominant (Y) → Yellow body

Answer:

(Question 3):
Purebred squarepants: \( SS \)
Blue body: \( yy \)
Hybrid round eyes: \( Rr \)
Purebred roundpants: \( ss \)
Heterozygous squarepants: \( Ss \)
Homozygous yellow body: \( YY \)