Codominance (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In codominance, how are both alleles expressed in heterozygous individuals?
In codominance, how are both alleles expressed in heterozygous individuals?
Equally in the phenotype
What phenotype do heterozygous individuals display in codominant inheritance?
What phenotype do heterozygous individuals display in codominant inheritance?
Both allelic expressions simultaneously
In shorthorn cattle, what does the enzyme do at the molecular level?
In shorthorn cattle, what does the enzyme do at the molecular level?
Catalyses red pigment formation
What causes white coat colour in shorthorn cattle?
What causes white coat colour in shorthorn cattle?
No enzyme produced, no pigment
How does the roan coat appear in heterozygous shorthorn cattle?
How does the roan coat appear in heterozygous shorthorn cattle?
Red and white hairs mixed across coat
Why are superscript letters used in codominance notation?
Why are superscript letters used in codominance notation?
To avoid dominant/recessive case system
What is the correct genotype for a red-coated shorthorn cattle?
What is the correct genotype for a red-coated shorthorn cattle?
What phenotype results from crossing red () with white () cattle?
What phenotype results from crossing red () with white () cattle?
All roan offspring
What genotypic ratio results from crossing two roan cattle ( × )?
What genotypic ratio results from crossing two roan cattle ( × )?
1:2:1
In the notation and , what does the base letter C represent?
In the notation and , what does the base letter C represent?
The gene (colour)