Step 1: Identify the alleles and their corresponding phenotypes.
The problem states that red flower color is represented by 'W' and white flower color by 'w'.
It also states that the heterozygous plant (Ww) is pink flowered. This indicates incomplete dominance.
Phenotypes and Genotypes:
• Red flower: WW
• Pink flower: Ww
• White flower: ww
a) What will be the flower colour of the F1 generation?
The cross is between a red flowered plant and a white flowered plant.
Parental (P) genotypes: Red (WW) × White (ww)
To find the F1 genotypes, we cross the parental genotypes:
P:WW×ww
Gametes from WW: W
Gametes from ww: w
F1:Ww
All F1 individuals will have the genotype Ww. According to the problem, Ww results in a pink flower color.
The flower colour of the F1 generation will be: Pink
b) What will be the flower colour of the F2 generation after selfing F1?
The F1 generation consists of pink flowered plants (Ww). Selfing F1 means crossing F1 individuals with each other: Ww × Ww.
Step 1: Perform the F1 self-cross (Ww × Ww).
We can use a Punnett square:
| | W | w |
|-------|-------|-------|
| W | WW | Ww |
| w | Ww | ww |
Step 2: Determine the genotypes and corresponding phenotypes for the F2 generation.
From the Punnett square, the F2 genotypes are:
• 1 WW
• 2 Ww
• 1 ww
Now, match these genotypes to their phenotypes:
• WW: Red flower
• Ww: Pink flower
• ww: White flower
So, the F2 generation will have:
• 1 Red flowered plant
• 2 Pink flowered plants
• 1 White flowered plant
The flower colours of the F2 generation will be: Red,Pink,andWhite
That's 2 down. 3 left today — send the next one.