Answer :
Let's solve the genetics problem step-by-step!
### Scenario 1:
We are considering a cross between a heterozygous male (Ww) and a homozygous recessive female (ww).
Possible Genotypes of Offspring:
- The male parent contributes either W or w.
- The female parent can only contribute w.
Let's list out the combinations:
- From (Ww) x (ww), the possible offspring are:
- Ww (W from male and w from female)
- ww (w from male and w from female)
- Ww (W from male and w from female)
- ww (w from male and w from female)
Probability Calculation:
- There are two heterozygous (Ww) combinations.
- Out of four total combinations (Ww, ww, Ww, ww), the chance of having heterozygous offspring (Ww) is 2 out of 4.
So, the probability that the offspring will be heterozygous is [tex]\( \frac{2}{4} = 0.5 \)[/tex] or 50%.
### Scenario 2:
Now, we'll look at a cross between a heterozygous individual (Ww) and a homozygous dominant individual (WW).
Possible Genotypes of Offspring:
- The heterozygous parent (Ww) can contribute W or w.
- The homozygous dominant parent (WW) can only contribute W.
Possible combinations are:
- WW (W from both parents)
- Ww (W from either parent and w from the heterozygous parent)
- WW (W from both parents)
- Ww (W from either parent and w from the heterozygous parent)
Probability Calculation:
- There are no combinations where both contribute 'w' to produce 'ww', which would be homozygous recessive.
So, the probability of having homozygous recessive (ww) offspring in this cross is 0%.
In summary:
- 50% chance of having heterozygous (Ww) offspring in the first scenario.
- 0% chance of having homozygous recessive (ww) offspring in the second scenario.
### Scenario 1:
We are considering a cross between a heterozygous male (Ww) and a homozygous recessive female (ww).
Possible Genotypes of Offspring:
- The male parent contributes either W or w.
- The female parent can only contribute w.
Let's list out the combinations:
- From (Ww) x (ww), the possible offspring are:
- Ww (W from male and w from female)
- ww (w from male and w from female)
- Ww (W from male and w from female)
- ww (w from male and w from female)
Probability Calculation:
- There are two heterozygous (Ww) combinations.
- Out of four total combinations (Ww, ww, Ww, ww), the chance of having heterozygous offspring (Ww) is 2 out of 4.
So, the probability that the offspring will be heterozygous is [tex]\( \frac{2}{4} = 0.5 \)[/tex] or 50%.
### Scenario 2:
Now, we'll look at a cross between a heterozygous individual (Ww) and a homozygous dominant individual (WW).
Possible Genotypes of Offspring:
- The heterozygous parent (Ww) can contribute W or w.
- The homozygous dominant parent (WW) can only contribute W.
Possible combinations are:
- WW (W from both parents)
- Ww (W from either parent and w from the heterozygous parent)
- WW (W from both parents)
- Ww (W from either parent and w from the heterozygous parent)
Probability Calculation:
- There are no combinations where both contribute 'w' to produce 'ww', which would be homozygous recessive.
So, the probability of having homozygous recessive (ww) offspring in this cross is 0%.
In summary:
- 50% chance of having heterozygous (Ww) offspring in the first scenario.
- 0% chance of having homozygous recessive (ww) offspring in the second scenario.
