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1. If a heterozygous male with the genotype [tex]Ww[/tex] is mated with a homozygous recessive female of genotype [tex]ww[/tex], there is a [choose answer] chance that the offspring will be heterozygous.

\begin{tabular}{|c|c|c|}
\hline & W & w \\
\hline w & Ww & ww \\
\hline w & Ww & ww \\
\hline
\end{tabular}

2. If the heterozygous [tex]Ww[/tex] is crossed with a homozygous dominant [tex]WW[/tex], then the probability of having a homozygous recessive offspring is [choose answer].

\begin{tabular}{|c|c|c|}
\hline & W & w \\
\hline W & WW & Ww \\
\hline W & WW & Ww \\
\hline
\end{tabular}

Sagot :

GinnyAnsweridn
Sure, let's break down the given problem step-by-step.

### First Scenario:
If a heterozygous male with the genotype Ww is mated with a homozygous recessive female of genotype ww, what is the chance that the offspring will be heterozygous?

1. Parental Genotypes:
- Male: Ww
- Female: ww

2. Punnett Square:
- Male (Ww) can contribute either W or w.
- Female (ww) can only contribute w.

The Punnett square looks like this:

[tex]\[ \begin{array}{|c|c|c|} \hline & W & w \\ \hline w & Ww & ww \\ \hline w & Ww & ww \\ \hline \end{array} \][/tex]

3. Possible Offspring Genotypes:
- Ww
- Ww
- ww
- ww

Thus, there's a 50% chance (2 out of 4) that the offspring will be heterozygous (Ww).

### Second Scenario:
If the heterozygous Ww is crossed with a homozygous dominant WW, what is the probability of having a homozygous recessive offspring?

1. Parental Genotypes:
- Heterozygous: Ww
- Homozygous dominant: WW

2. Punnett Square:
- Heterozygous Ww can contribute either W or w.
- Homozygous dominant WW can only contribute W.

The Punnett square looks like this:

[tex]\[ \begin{array}{|c|c|c|} \hline & W & w \\ \hline W & WW & Ww \\ \hline W & WW & Ww \\ \hline \end{array} \][/tex]

3. Possible Offspring Genotypes:
- WW
- WW
- Ww
- Ww

There are no homozygous recessive (ww) offspring in this scenario. Hence, the probability is 0%.

### Answer Summary:

1. If a heterozygous male (Ww) is mated with a homozygous recessive female (ww), there is a 50% chance that the offspring will be heterozygous (Ww).
2. If a heterozygous (Ww) is crossed with a homozygous dominant (WW), the probability of having a homozygous recessive (ww) offspring is 0.
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