Genetic crosses (AQA GCSE Biology): Flashcards
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Practise the cards
12 cards from this deck
What do genetic crosses predict?
What do genetic crosses predict?
Traits offspring will have
Two tools for genetic crosses
Two tools for genetic crosses
Genetic diagrams & Punnett squares
Alleles definition
Alleles definition
Different versions of the same gene
Heterozygous definition
Heterozygous definition
Two different alleles for a trait
Dominant allele notation
Dominant allele notation
Capital letters
Recessive allele notation
Recessive allele notation
Lowercase letters
When dominant alleles show
When dominant alleles show
When present (only need one copy)
When recessive alleles show
When recessive alleles show
With two copies only
Punnett square definition
Punnett square definition
Grid diagram showing all possible gamete combinations
Gametes definition
Gametes definition
Sex cells
Four probability formats
Four probability formats
Fraction, decimal, percentage, ratio
Phenotype ratio: Bb × Bb cross
Phenotype ratio: Bb × Bb cross
3:1 (dominant:recessive)