Question

which of the genotypes in #1 would be hybrids? 2. determine the phenotype for each genotype using the information provided about spongebob. yellow body color is dominant to blue. yy __ yy yy square shape is dominant to round. ss ss ss 3. for each phenotype, give the genotypes that are possible for patrick. a tall head (t) is dominant to short (t). tall = short = pink body color (p) is dominant to yellow (p). pink body = yellow body = 4. spongebob squarepants recently met spongesusie roundpants at a dance. spongebob is heterozygous for his square shape, but spongesusie is round. create a punnett square to show the possibilities that would result if spongebob and spongesusie had children. hint: read question #2! a. list the possible genotypes and phenotypes for their children. b. what are the chances of a child with a square shape? out of or % c. what are the chances of a child with a round shape? out of or % 5. patrick met patti at the dance. both of them are heterozygous for their pink body color, which is dominant over a yellow body color. create a punnett square to show the possibilities that would result if patrick and patti had children. hint: read question #3! a. list the possible genotypes and phenotypes for their children. b. what are the chances of a child with a pink body? out of or % c. what are the chances of a child with a yellow body? out of or __% t. trimpe 2003 http://sciencespot.net/

Explanation:

Step1: Determine phenotypes for question 2

Since yellow (Y) is dominant to blue (y), YY and Yy have yellow phenotype, yy has blue phenotype. Since square (S) is dominant to round (s), SS and Ss have square phenotype, ss has round phenotype.

Step2: Determine genotypes for question 3

For tall head (T dominant to t), tall can be TT or Tt, short is tt. For pink body color (P dominant to p), pink body can be PP or Pp, yellow body is pp.

Step3: Punnett - square for question 4

Sponge - Bob (Ss) and Sponge - Susie (ss). The Punnett - square has Ss, Ss, ss, ss.

A:

Possible genotypes: Ss, ss. Possible phenotypes: square, round.

B:

2 out of 4 or 50% (2 Ss out of 4 total genotypes).

C:

2 out of 4 or 50% (2 ss out of 4 total genotypes).

Step4: Punnett - square for question 5

Patrick and Patti (both Pp). The Punnett - square has PP, Pp, Pp, pp.

A:

Possible genotypes: PP, Pp, pp. Possible phenotypes: pink, yellow.

B:

3 out of 4 or 75% (1 PP + 2 Pp out of 4 total genotypes).

C:

1 out of 4 or 25% (1 pp out of 4 total genotypes).

Answer:

1. YY - yellow, Yy - yellow, yy - blue, SS - square, Ss - square, ss - round
2. Tall = TT, Tt; Short = tt; Pink body = PP, Pp; Yellow body = pp
3. A. Genotypes: Ss, ss; Phenotypes: square, round

B. 2 out of 4 or 50%
C. 2 out of 4 or 50%

1. A. Genotypes: PP, Pp, pp; Phenotypes: pink, yellow

B. 3 out of 4 or 75%
C. 1 out of 4 or 25%