Answer :
Let's take a look at both genetic crosses to determine the probabilities of the offspring's genotypes.
First Cross:
- Genotypes involved: Heterozygous male (Ww) and homozygous recessive female (ww).
- Punnett Square for Ww x ww:
```
| W | w |
---------------
w | Ww | ww |
---------------
w | Ww | ww |
```
- Possible Offspring:
- Ww (heterozygous)
- ww (homozygous recessive)
- Probability of being heterozygous (Ww):
- Out of 4 possible outcomes, there are 2 Ww combinations.
- Probability = 2/4 = 0.5, or 50%.
Second Cross:
- Genotypes involved: Heterozygous individual (Ww) with a homozygous dominant individual (WW).
- Punnett Square for Ww x WW:
```
| W | w |
---------------
W | WW | Ww |
---------------
W | WW | Ww |
```
- Possible Offspring:
- WW (homozygous dominant)
- Ww (heterozygous)
- Probability of being homozygous recessive (ww):
- There are no ww combinations among the outcomes.
- Probability = 0, or 0%.
In summary, when a heterozygous male (Ww) mates with a homozygous recessive female (ww), there is a 50% chance of producing heterozygous (Ww) offspring. When a heterozygous individual (Ww) is crossed with a homozygous dominant individual (WW), the probability of having a homozygous recessive (ww) offspring is 0%.
First Cross:
- Genotypes involved: Heterozygous male (Ww) and homozygous recessive female (ww).
- Punnett Square for Ww x ww:
```
| W | w |
---------------
w | Ww | ww |
---------------
w | Ww | ww |
```
- Possible Offspring:
- Ww (heterozygous)
- ww (homozygous recessive)
- Probability of being heterozygous (Ww):
- Out of 4 possible outcomes, there are 2 Ww combinations.
- Probability = 2/4 = 0.5, or 50%.
Second Cross:
- Genotypes involved: Heterozygous individual (Ww) with a homozygous dominant individual (WW).
- Punnett Square for Ww x WW:
```
| W | w |
---------------
W | WW | Ww |
---------------
W | WW | Ww |
```
- Possible Offspring:
- WW (homozygous dominant)
- Ww (heterozygous)
- Probability of being homozygous recessive (ww):
- There are no ww combinations among the outcomes.
- Probability = 0, or 0%.
In summary, when a heterozygous male (Ww) mates with a homozygous recessive female (ww), there is a 50% chance of producing heterozygous (Ww) offspring. When a heterozygous individual (Ww) is crossed with a homozygous dominant individual (WW), the probability of having a homozygous recessive (ww) offspring is 0%.