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  2. Lethal allele - Wikipedia

    en.wikipedia.org/wiki/Lethal_allele

    Punnett square for the agouti gene in mice, demonstrating a recessive lethal allele. [2] Lethal alleles were first discovered by Lucien Cuénot in 1905 while studying the inheritance of coat colour in mice. The agouti gene in mice is largely responsible for determining coat colour. The wild-type allele produces a blend of yellow and black ...

  3. Punnett square - Wikipedia

    en.wikipedia.org/wiki/Punnett_square

    A Punnett square showing a typical test cross. (green pod color is dominant over yellow for pea pods [ 1 ] in contrast to pea seeds, where yellow cotyledon color is dominant over green [ 2 ] ). Punnett squares for each combination of parents' colour vision status giving probabilities of their offsprings' status, each cell having 25% probability ...

  4. Hereditary carrier - Wikipedia

    en.wikipedia.org/wiki/Hereditary_carrier

    Punnett square: If the other parent does not have the recessive genetic disposition, it does not appear in the phenotype of the children, but on the average 50% of them become carriers. A hereditary carrier ( genetic carrier or just carrier ), is a person or other organism that has inherited a recessive allele for a genetic trait or mutation ...

  5. Human genetics - Wikipedia

    en.wikipedia.org/wiki/Human_genetics

    An example of a family pedigree displaying an autosomal recessive trait. A pedigree is a diagram showing the ancestral relationships and transmission of genetic traits over several generations in a family. Square symbols are almost always used to represent males, whilst circles are used for females.

  6. Mendelian traits in humans - Wikipedia

    en.wikipedia.org/wiki/Mendelian_traits_in_humans

    Autosomal dominant A 50/50 chance of inheritance. Sickle-cell disease is inherited in the autosomal recessive pattern. When both parents have sickle-cell trait (carrier), a child has a 25% chance of sickle-cell disease (red icon), 25% do not carry any sickle-cell alleles (blue icon), and 50% have the heterozygous (carrier) condition. [1]

  7. Pedigree chart - Wikipedia

    en.wikipedia.org/wiki/Pedigree_chart

    The word pedigree is a corruption of the Anglo-Norman French pé de grue or "crane's foot", either because the typical lines and split lines (each split leading to different offspring of the one parent line) resemble the thin leg and foot of a crane [3] or because such a mark was used to denote succession in pedigree charts.

  8. Kentucky school district mourns death of middle school ...

    www.aol.com/kentucky-school-district-mourns...

    Mercer County Schools are mourning the death of an eighth-grade student. Griffin Baker, a student at King Middle School, passed away from injuries sustained in an ATV incident, according to a ...

  9. Waardenburg syndrome - Wikipedia

    en.wikipedia.org/wiki/Waardenburg_syndrome

    Autosomal recessive Type 2E (WS2E) 611584: SOX10: 22q13.1 Autosomal dominant Type 3 (WS3) 148820: PAX3: 2q36.1 Autosomal dominant or autosomal recessive Type 4A (WS4A) 277580: EDNRB: 13q22 Autosomal dominant or autosomal recessive Type 4B (WS4B) 613265: EDN3: 20q13 Autosomal dominant or autosomal recessive Type 4C (WS4C) 613266: SOX10: 22q13.1 ...