Skip to main content
Home
Illustrations
Problem Sets
Calculators
About
Home
/
Punnett Square Practice Problems
Punnett Square Practice Problems
1
1
2
A plant species has two alleles for flower color: Red (R) and White (r). The Red (R) allele exhibits incomplete dominance. The intermediate phenotype is pink flowers.
Based on the following Punnett Square, what is the probability that an offspring will be heterozygous?
To view this illustration, enable JavaScript and use the most current version of one of the following browsers:
Firefox
,
Chrome
,
Safari
,
Opera
,
Internet Explorer 9 or higher
Internet Explorer version 8 will or lower will not work
Given your answer to the nearest percentage.
%
HINT
Each genotype shown in the Punnett Square has a 25% chance of occuring. If the same genotype appears in more than one square, the probabilites are added:
1 square = 25% probability
2 squares = 50% probability
3 squares = 75% probability
If the same genetype appears in all 4 boxes, 100% of the offspring will have that genotype.
Related Content
Illustrations
Alleles, genotype and phenotype
Punnett Square
Genotype and phenotype probabilities with a monohybrid cross
Problem Sets
Allele, genotype and Phenotype questions
Monohybrid genotype and phenotype probability questions
Search form
Follow @SciencePrimer
Tweet
Contact SciencePrimer
Latest Illustrations
Mitosis and Cytokinesis
Exponential Patterns and Large Numbers
Cell Cycle
Adenosine Triphosphate
Log Scale Overview