BLG1501
Assignment 2 Semester 1
Unique No: 641006
Due 20 April 2026
, QUESTION 1
A purple flower (P) is dominant, and the white flower (p) is recessive. Use the Punnett
square to predict the results of this monohybrid cross between a purple homozygote
flower and a white homozygote flower and state the phenotypic and genotypic ratios of
the F2 generation.
Step 1: Parental Cross (P generation)
• Purple homozygote: PP
• White homozygote: pp
Punnett square:
P P
p Pp Pp
p Pp Pp
F1 Generation
• All offspring are heterozygous (Pp)
• Phenotype: All offspring have purple flowers because the dominant allele (P)
masks the recessive allele (p)
• Genotype composition: All offspring carry one dominant and one recessive allele
This uniform appearance of the F1 generation demonstrates Mendel’s principle of
dominance, where the dominant allele determines the visible trait (Griffiths et al., 2018).
Assignment 2 Semester 1
Unique No: 641006
Due 20 April 2026
, QUESTION 1
A purple flower (P) is dominant, and the white flower (p) is recessive. Use the Punnett
square to predict the results of this monohybrid cross between a purple homozygote
flower and a white homozygote flower and state the phenotypic and genotypic ratios of
the F2 generation.
Step 1: Parental Cross (P generation)
• Purple homozygote: PP
• White homozygote: pp
Punnett square:
P P
p Pp Pp
p Pp Pp
F1 Generation
• All offspring are heterozygous (Pp)
• Phenotype: All offspring have purple flowers because the dominant allele (P)
masks the recessive allele (p)
• Genotype composition: All offspring carry one dominant and one recessive allele
This uniform appearance of the F1 generation demonstrates Mendel’s principle of
dominance, where the dominant allele determines the visible trait (Griffiths et al., 2018).
