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Genetics pedigree templates

Biology — Pedigree: red-green colour blindness

X-linked recessive — affected grandfather to grandson.

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Template previewGenetics pedigree
Red-green colour blindness (X-linked recessive)I1I2II1II2Unaffected maleUnaffected femaleAffectedCarrierConsistent with 4 modes — autosomal dominant, autosomal recessive, X-linked recessive, m…Consistent with 4 modes: autosomal dominant, autosomal recessive, X-linked recessive, mitochondrial. …X-linked dominant is ruled out: II1 is an unaffected daughter of the affected I1. He has one X and gi…Y-linked is ruled out: II2 is an unaffected son of the affected I1. A Y-linked trait passes to every …

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title "Red-green colour blindness (X-linked recessive)"
individual I1 sex male affected yes gen 1
individual I2 sex female affected no gen 1
mating I1 I2
individual II1 sex female affected no carrier yes gen 2 parents I1 I2
individual II2 sex male affected no gen 2 parents I1 I2