Genetic Diagrams (Edexcel GCSE Biology Combined Science): Flashcards
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What is inheritance of a single trait called?
What is inheritance of a single trait called?
Monohybrid inheritance
What a monohybrid cross shows
What a monohybrid cross shows
How recessive & dominant traits for a characteristic are inherited
3 ways to express genetic outcomes
3 ways to express genetic outcomes
Probability, ratio, percentage
Definition of a pedigree
Definition of a pedigree
Diagram showing family history for inheritance of genes/conditions
Type of allele that causes cystic fibrosis
Type of allele that causes cystic fibrosis
Recessive allele 'f'
Carrier frequency of cystic fibrosis allele
Carrier frequency of cystic fibrosis allele
1 in 30 people
What horizontal lines show in pedigrees
What horizontal lines show in pedigrees
Link parents to each other
What vertical lines show in pedigrees
What vertical lines show in pedigrees
Link to children
Chance of baby with CF (two carrier parents)
Chance of baby with CF (two carrier parents)
1 in 4 or 25%
Chance of baby being CF carrier (two carrier parents)
Chance of baby being CF carrier (two carrier parents)
1 in 2 or 50%