Probability & Genetic Crosses (AQA A-Level Biology): Flashcards
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Practise the cards
10 cards from this deck
What genetic ratios represent
What genetic ratios represent
Relative proportions between different groups or classes
Why actual genetic results differ from predictions
Why actual genetic results differ from predictions
Statistical error - natural variation in biological systems
How to simplify a genetic ratio
How to simplify a genetic ratio
Divide each number by the greatest common divisor
Theoretical ratio for monohybrid cross
Theoretical ratio for monohybrid cross
Effect of larger sample sizes on genetic ratios
Effect of larger sample sizes on genetic ratios
Results closer to theoretical predictions
Independence principle in fertilisation
Independence principle in fertilisation
Each fertilisation is independent; previous outcomes don't affect future ones
Heterozygote genotype example
Heterozygote genotype example
Gg
Homozygous recessive genotype example
Homozygous recessive genotype example
gg
Pattern in Mendel's F₂ generation data
Pattern in Mendel's F₂ generation data
Ratios cluster around with natural variation
Why smaller samples deviate more from expected ratios
Why smaller samples deviate more from expected ratios
Individual chance events have more impact on overall result