HUMAN GENETIC TRAITS

compiled by David B. Fankhauser

UC Clermont College

27 January 2006, 1 February 2008

Genetics text sources used:     Griffiths et al,7^th p 426,

                                                Klug and Cummings, 4^th: p 69

                                                Tamarin 4^th : p 82-87

Non-pathological:

         DOMINANT TRAIT                            RECESSIVE TRAIT

         Brown eyes                                             Blue eyes (actually more complex, simplified here)

         PTC taster                                               PTC non taster 

         Widow's Peak                                         Lack Widow’s peak  (p 265 a)

         Middigital hair                                        Hairless mid digits

         Tongue roller                                          Cannot roll tongue

         Detached earlobe                                    Attached earlobe       (p 265 b)

          A and B blood type (codominant)           Type O blood type

         Rh positive blood type                            Rh negative blood type

         Pattern baldness (dominant in males)     Pattern baldness (recessive in females)

Pathological:

DOMINANT TRAIT

Achondroplasia

Brachydactyly

Congenital stationary night blindness

Ehler-Danlos syndrome

Fascio-scapulo-humeral muscular dystrophy

Huntington disease

Hypercholesterolemia

Marfan Syndrome

Nail-patella syndrome

Neurofibromatosis

Polydactyly

RECESSIVE TRAIT

Albinism

Alkaptonuria

Atasia telangiectasia

Color blindness

Cystic fibrosis

Duchenne muscular dystrophy

Galactosemia

Hemophilia

Lesch-Nyhan syndrome

Phenylketonuria

Sickle-cell anemia

Tay-Sachs disease