Selfing and Linkage (Leaving Cert Biology): Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
Selfing
Selfing
Crossing a genotype with the same genotype
F₂ generation
F₂ generation
Second filial generation from crossing two F₁ individuals
Dihybrid cross
Dihybrid cross
Cross looking at two different traits at same time
Dihybrid cross ratio (independent assortment)
Dihybrid cross ratio (independent assortment)
Genetic linkage
Genetic linkage
Genes/alleles located on the same chromosome
How linked genes are inherited
How linked genes are inherited
Passed on together to next generation
Linked genes & independent assortment
Linked genes & independent assortment
Don't follow it; stay together on same chromosome
Gamete ratio: unlinked genes
Gamete ratio: unlinked genes
(four types, 25% each)
Gamete ratio: linked genes
Gamete ratio: linked genes
(two types, 50% each)
Chromosome location: unlinked genes
Chromosome location: unlinked genes
Different chromosomes
Chromosome location: linked genes
Chromosome location: linked genes
Same chromosome
F₂ phenotypic ratio: unlinked genes
F₂ phenotypic ratio: unlinked genes
Ratio indicating genetic linkage
Ratio indicating genetic linkage
Mendel's law contradicted by linkage
Mendel's law contradicted by linkage
Second law (independent assortment)
