Answer :
Sure! Let's go through the problem step by step.
### Part 1: Heterozygous Male (Ww) and Homozygous Recessive Female (ww)
1. Parent Genotypes:
- The male has the genotype Ww (heterozygous).
- The female has the genotype ww (homozygous recessive).
2. Possible Offspring Genotypes:
- When these two are mated, the offspring can either inherit a 'W' or 'w' from the male and a 'w' from the female.
- This means the possible combinations are:
- Ww (inheriting 'W' from the male and 'w' from the female)
- ww (inheriting 'w' from both the male and the female)
3. Genotype Probability:
- The possible offspring genotypes are Ww and ww.
- There are 2 Ww out of the 4 total possibilities (Ww, Ww, ww, ww).
- Therefore, the probability of an offspring being heterozygous (Ww) is 50% or 0.5.
### Part 2: Heterozygous (Ww) and Homozygous Dominant (WW)
1. Parent Genotypes:
- One parent is Ww (heterozygous).
- The other parent is WW (homozygous dominant).
2. Possible Offspring Genotypes:
- The offspring can inherit a 'W' from either parent:
- WW (inheriting 'W' from both parents)
- Ww (inheriting 'W' from one parent and 'w' from the heterozygous parent)
3. Genotype Probability:
- Since all possible offspring genotypes are either WW or Ww (no 'ww' possibility exists):
- Thus, the probability of producing a homozygous recessive offspring (ww) is 0% or 0.0.
So, in summary:
- There is a 50% chance that the offspring will be heterozygous when a heterozygous male (Ww) mates with a homozygous recessive female (ww).
- There is a 0% chance of having a homozygous recessive offspring when a heterozygous (Ww) individual is crossed with a homozygous dominant (WW) individual.
### Part 1: Heterozygous Male (Ww) and Homozygous Recessive Female (ww)
1. Parent Genotypes:
- The male has the genotype Ww (heterozygous).
- The female has the genotype ww (homozygous recessive).
2. Possible Offspring Genotypes:
- When these two are mated, the offspring can either inherit a 'W' or 'w' from the male and a 'w' from the female.
- This means the possible combinations are:
- Ww (inheriting 'W' from the male and 'w' from the female)
- ww (inheriting 'w' from both the male and the female)
3. Genotype Probability:
- The possible offspring genotypes are Ww and ww.
- There are 2 Ww out of the 4 total possibilities (Ww, Ww, ww, ww).
- Therefore, the probability of an offspring being heterozygous (Ww) is 50% or 0.5.
### Part 2: Heterozygous (Ww) and Homozygous Dominant (WW)
1. Parent Genotypes:
- One parent is Ww (heterozygous).
- The other parent is WW (homozygous dominant).
2. Possible Offspring Genotypes:
- The offspring can inherit a 'W' from either parent:
- WW (inheriting 'W' from both parents)
- Ww (inheriting 'W' from one parent and 'w' from the heterozygous parent)
3. Genotype Probability:
- Since all possible offspring genotypes are either WW or Ww (no 'ww' possibility exists):
- Thus, the probability of producing a homozygous recessive offspring (ww) is 0% or 0.0.
So, in summary:
- There is a 50% chance that the offspring will be heterozygous when a heterozygous male (Ww) mates with a homozygous recessive female (ww).
- There is a 0% chance of having a homozygous recessive offspring when a heterozygous (Ww) individual is crossed with a homozygous dominant (WW) individual.
