Patterns of Inheritance (OCR A-Level Biology A): Flashcards
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Monohybrid cross
Monohybrid cross
Inheritance of a single gene with two alleles
F₂ phenotypic ratio in complete dominance
F₂ phenotypic ratio in complete dominance
3:1
Heterozygote phenotype in incomplete dominance
Heterozygote phenotype in incomplete dominance
Intermediate between two homozygous phenotypes
Codominance vs incomplete dominance
Codominance vs incomplete dominance
Both alleles expressed vs blended intermediate phenotype
F₂ ratio for dihybrid cross of unlinked genes
F₂ ratio for dihybrid cross of unlinked genes
9:3:3:1
Sex linkage
Sex linkage
Genes present on the X chromosome
Hemizygous
Hemizygous
Having only one allele (males for X-linked genes)
Multiple alleles in diploid individual
Multiple alleles in diploid individual
Can only carry two alleles (one from each parent)
Epistasis
Epistasis
Two+ genes interact to influence single phenotype
Chi-squared test purpose
Chi-squared test purpose
Evaluates if observed data differ significantly from expected