Genetic Diagrams (Edexcel GCSE Biology): Flashcards
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12 cards from this deck
Monohybrid inheritance
Monohybrid inheritance
Inheritance from one trait
Purpose of monohybrid cross
Purpose of monohybrid cross
Shows how recessive & dominant traits are inherited
Three ways to express genetic outcomes
Three ways to express genetic outcomes
Probability, ratio, percentage
Pedigree (genetics)
Pedigree (genetics)
Diagram showing family history of genetic condition/genes
Cystic fibrosis allele type & symbol
Cystic fibrosis allele type & symbol
Recessive allele
Carrier rate for CF allele
Carrier rate for CF allele
1 in 30 people
Horizontal lines in pedigree show
Horizontal lines in pedigree show
Link parents to each other
Vertical lines in pedigree show
Vertical lines in pedigree show
Link to children
Chance baby has CF (2 carrier parents)
Chance baby has CF (2 carrier parents)
1 in 4 (25%)
Chance baby is CF carrier (2 carrier parents)
Chance baby is CF carrier (2 carrier parents)
1 in 2 (50%)
Genotype for CF carrier
Genotype for CF carrier
Parent requirement for recessive disorder in child
Parent requirement for recessive disorder in child
Both must have disorder or be carriers