Immersive Reader
If purple flowers are dominant in a plant and white flowers are recessive in that plant, then when purple-flowered plants with two dominant genes are mated with white-flowered plants with two recessive genes, the first generation of offspring should have
A
100% white flowers
B
75% purple flowers and 25% white flowers
C
50% purple flowers and 50% white flowers
D
100% purple flowers
The correct answer is B. 75% purple flowers and 25% white flowers.
When purple-flowered plants with two dominant genes (PP) are mated with white-flowered plants with two recessive genes (pp), the possible combinations in the first generation of offspring (F1 generation) are:
1. Pp (purple flower)
2. Pp (purple flower)
3. Pp (purple flower)
4. pp (white flower)
Out of these four possible combinations, 3 of them result in purple-flowered offspring and 1 results in white-flowered offspring. This means that the first generation of offspring should have 75% purple flowers and 25% white flowers.