Question

1. set up a punnett square for crossing a heterozygous fluffy (gg) rabbit with a homozygous fluffy (gg) rabbit.

a. what are the offspring’s genotypes?
b. what are the offspring’s phenotypes?

1. in procedure 11.2 if you displayed a dominant phenotype, do you 100% know your genotype? explain why or why not.

Explanation:

Part 1a

Step1: Analyze Punnett Square

The Punnett square shows the cross between \( Gg \) (heterozygous) and \( GG \) (homozygous). The cells are \( GG \), \( Gg \), \( GG \), \( Gg \).

Step2: Identify Genotypes

Count the occurrences: \( GG \) appears twice, \( Gg \) appears twice. So the genotypes are \( GG \) and \( Gg \).

Step1: Recall Dominance

The allele \( G \) is dominant (fluffy), so both \( GG \) and \( Gg \) show the dominant phenotype (fluffy).

Step2: Determine Phenotype

Since all offspring genotypes (\( GG \), \( Gg \)) have the dominant allele \( G \), the phenotype is fluffy.

Step1: Understand Genotype/Phenotype

A dominant phenotype can be from \( AA \) (homozygous dominant) or \( Aa \) (heterozygous) if \( A \) is dominant over \( a \).

Step2: Explain Uncertainty

If you have a dominant phenotype, you can’t be 100% sure of your genotype. For example, a fluffy rabbit (dominant) could be \( GG \) or \( Gg \) (from the cross above, both give fluffy). So dominant phenotype can come from two genotypes.

Answer:

The offspring's genotypes are \( GG \) (homozygous dominant) and \( Gg \) (heterozygous dominant), with \( GG \) and \( Gg \) each having a 50% (or 2 out of 4) chance of occurring.

Part 1b