Answer :
Certainly! Let's go through the scenarios step-by-step.
### First Scenario:
We have a heterozygous male with the genotype Ww mating with a homozygous recessive female with the genotype ww.
1. Parent Genotypes:
- Male: Ww
- Female: ww
2. Possible Offspring Genotypes:
- When W from the male combines with w from the female, the offspring is Ww.
- When w from the male combines with w from the female, the offspring is ww.
3. Offspring Genotype Distribution:
- Ww
- ww
- Ww
- ww
4. Probability of Heterozygous Offspring (Ww):
- There are 2 Ww out of 4 possible offspring.
- Therefore, the chance of the offspring being heterozygous (Ww) is 2 out of 4, or 50%.
### Second Scenario:
A heterozygous individual with genotype Ww is crossed with a homozygous dominant individual with genotype WW.
1. Parent Genotypes:
- Heterozygous: Ww
- Homozygous Dominant: WW
2. Possible Offspring Genotypes:
- When W from Ww combines with W from WW, the offspring is WW.
- When w from Ww combines with W from WW, the offspring is Ww.
3. Offspring Genotype Distribution:
- WW
- Ww
- WW
- Ww
4. Probability of Homozygous Recessive Offspring (ww):
- There are no ww genotypes possible in this case.
- Therefore, the probability of having homozygous recessive offspring (ww) is 0 out of 4, or 0%.
In summary:
- The chance of heterozygous offspring in the first scenario is 50%.
- The chance of homozygous recessive offspring in the second scenario is 0%.
### First Scenario:
We have a heterozygous male with the genotype Ww mating with a homozygous recessive female with the genotype ww.
1. Parent Genotypes:
- Male: Ww
- Female: ww
2. Possible Offspring Genotypes:
- When W from the male combines with w from the female, the offspring is Ww.
- When w from the male combines with w from the female, the offspring is ww.
3. Offspring Genotype Distribution:
- Ww
- ww
- Ww
- ww
4. Probability of Heterozygous Offspring (Ww):
- There are 2 Ww out of 4 possible offspring.
- Therefore, the chance of the offspring being heterozygous (Ww) is 2 out of 4, or 50%.
### Second Scenario:
A heterozygous individual with genotype Ww is crossed with a homozygous dominant individual with genotype WW.
1. Parent Genotypes:
- Heterozygous: Ww
- Homozygous Dominant: WW
2. Possible Offspring Genotypes:
- When W from Ww combines with W from WW, the offspring is WW.
- When w from Ww combines with W from WW, the offspring is Ww.
3. Offspring Genotype Distribution:
- WW
- Ww
- WW
- Ww
4. Probability of Homozygous Recessive Offspring (ww):
- There are no ww genotypes possible in this case.
- Therefore, the probability of having homozygous recessive offspring (ww) is 0 out of 4, or 0%.
In summary:
- The chance of heterozygous offspring in the first scenario is 50%.
- The chance of homozygous recessive offspring in the second scenario is 0%.