Genetic Diagrams (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is monohybrid inheritance?
What is monohybrid inheritance?
Inheritance from one trait
What does a monohybrid cross show?
What does a monohybrid cross show?
How traits are inherited for one gene
In which three ways can genetic outcomes be expressed?
In which three ways can genetic outcomes be expressed?
Probability, ratio, %
What is a pedigree?
What is a pedigree?
A diagram showing family gene history
In a pedigree diagram, what do horizontal lines show?
In a pedigree diagram, what do horizontal lines show?
Parents linked to each other
In a pedigree diagram, what do vertical lines show?
In a pedigree diagram, what do vertical lines show?
Link to children
What type of disorder is cystic fibrosis?
What type of disorder is cystic fibrosis?
Genetic disorder of cell membranes
What type of allele causes cystic fibrosis?
What type of allele causes cystic fibrosis?
Recessive allele
How many people carry the cystic fibrosis allele?
How many people carry the cystic fibrosis allele?
1 in 30 people
What is the chance a baby will have cystic fibrosis if both parents are carriers?
What is the chance a baby will have cystic fibrosis if both parents are carriers?
1 in 4 (25%)