Question

a. spongebob squarepants recently met spongesusie roundpants at a dance. spongebob is heterozygous for his square shape (ss), but spongesusie is round (ss). fill in the punnett square to show the possible genotypes if spongebob and spongesusie had offspring.
punnett square image omitted
a. list the genotypes with the phenotypes of the possible offspring.
b. what are the chances of a child with a square shape? __ out of or what percent? __
c. what are the chances of a child with a round shape? __ out of or what percent? __

1. patrick met patti at the dance. both of them are heterozygous for their pink body color (p), which is dominant over a yellow color (p). fill in the punnett square to show the possible genotypes if patrick and patti had offspring.

Explanation:

Part A (Filling Punnett Square and Genotype-Phenotype List)

First, let's correct the Punnett square. SpongeBob is heterozygous (Ss) for square shape, and SpongeSusie is round (ss, since round is recessive). The correct Punnett square should have SpongeBob's gametes as S and s, and SpongeSusie's gametes as s and s.

	s	s
s	ss	ss

Now, list the genotypes and phenotypes:

• Genotype Ss: Phenotype is square (since S is dominant over s).
• Genotype ss: Phenotype is round (since s is recessive, and homozygous recessive shows the recessive trait).

Part B (Chances of Square Shape)

Step 1: Count total offspring in Punnett square

From the corrected Punnett square, there are 4 possible offspring (2 Ss and 2 ss).

Step 2: Count offspring with square shape (genotype Ss)

Number of Ss offspring: 2.

Step 3: Calculate the ratio and percentage

Ratio: $\frac{2}{4} = \frac{1}{2}$ (or 2 out of 4). Percentage: $\frac{2}{4} \times 100 = 50\%$.

Part C (Chances of Round Shape)

Step 1: Count total offspring in Punnett square

Total offspring: 4 (same as above).

Step 2: Count offspring with round shape (genotype ss)

Number of ss offspring: 2.

Step 3: Calculate the ratio and percentage

Ratio: $\frac{2}{4} = \frac{1}{2}$ (or 2 out of 4). Percentage: $\frac{2}{4} \times 100 = 50\%$.

Final Answers

Part A (Genotype-Phenotype List)

• Ss: Square shape
• ss: Round shape

Part B

Chances of square shape: 2 out of 4 or 50%.

Part C

Chances of round shape: 2 out of 4 or 50%.

Answer:

Part A (Filling Punnett Square and Genotype-Phenotype List)

First, let's correct the Punnett square. SpongeBob is heterozygous (Ss) for square shape, and SpongeSusie is round (ss, since round is recessive). The correct Punnett square should have SpongeBob's gametes as S and s, and SpongeSusie's gametes as s and s.

	s	s
s	ss	ss

Now, list the genotypes and phenotypes:

• Genotype Ss: Phenotype is square (since S is dominant over s).
• Genotype ss: Phenotype is round (since s is recessive, and homozygous recessive shows the recessive trait).

Part B (Chances of Square Shape)

Step 1: Count total offspring in Punnett square

From the corrected Punnett square, there are 4 possible offspring (2 Ss and 2 ss).

Step 2: Count offspring with square shape (genotype Ss)

Number of Ss offspring: 2.

Step 3: Calculate the ratio and percentage

Ratio: $\frac{2}{4} = \frac{1}{2}$ (or 2 out of 4). Percentage: $\frac{2}{4} \times 100 = 50\%$.

Part C (Chances of Round Shape)

Step 1: Count total offspring in Punnett square

Total offspring: 4 (same as above).

Step 2: Count offspring with round shape (genotype ss)

Number of ss offspring: 2.

Step 3: Calculate the ratio and percentage

Ratio: $\frac{2}{4} = \frac{1}{2}$ (or 2 out of 4). Percentage: $\frac{2}{4} \times 100 = 50\%$.

Final Answers

Part A (Genotype-Phenotype List)

• Ss: Square shape
• ss: Round shape

Part B

Chances of square shape: 2 out of 4 or 50%.

Part C

Chances of round shape: 2 out of 4 or 50%.