Question

the passage below describes the same species of fish.
in a species of fish, some fish have long fins and some fish have short fins. the allele for long fins (f) is dominant over the allele for short fins (f).
in a group of these fish, one fish has the genotype ff and has long fins. another fish has the genotype ff and has long fins. these two fish mate and produce many offspring.
select all the possible genotypes an offspring could have.
ff ff ff
select all the possible phenotypes an offspring could have.
long fins short fins

Explanation:

For Genotype Question:

Step1: Determine Parental Genotypes

Both parents have genotype \( Ff \).

Step2: Set Up Punnett Square

The possible gametes from each parent are \( F \) and \( f \). The Punnett square is:
\[

$$\begin{array}{c|cc} & F & f \\ \hline F & FF & Ff \\ f & Ff & ff \\ \end{array}$$

\]

Step3: Identify Offspring Genotypes

From the Punnett square, the possible genotypes are \( FF \), \( Ff \), and \( ff \).

Step1: Recall Dominance Rule

The allele \( F \) (long fins) is dominant over \( f \) (short fins). So:

• Genotype \( FF \): Phenotype is long fins (since \( F \) is dominant).
• Genotype \( Ff \): Phenotype is long fins (one dominant allele).
• Genotype \( ff \): Phenotype is short fins (two recessive alleles).

Step2: Determine Possible Phenotypes

From the genotypes \( FF \), \( Ff \), \( ff \), the phenotypes are long fins (from \( FF \) and \( Ff \)) and short fins (from \( ff \)).

Answer:

FF, Ff, ff

For Phenotype Question: