Non-Mendelian Genetics

a form of intermediate inheritance where both alleles in the heterozygote express themselves equally

neither allele expresses itself fully, therefore, there are no dominant or recessive alleles. it is nothing but a combined expression of the two alleles in the heterozygous condition producing a blend of the two individual phenotypes. (uppercase letters with superscripts are used)

when there is a gene existing in more than two allelic forms (e.g. blood types and rabbit fur color)

a biological process that involves the transmission of traits or characters from parents to offspring

caused by the variants in genes on the X chromosome, this is common in males because they have XY chromosomes. (e.g. hemophilia and color blindness)

a rare, inherited blood disorder that occurs when the blood doesn’t clot properly because of the lack of Factor VIII is called?

a person cannot distinguish shades of red and green

caused by the variants in genes on the X chromosome, this is common in males because they have XY chromosomes. (e.g. Rett Syndrome, Incontinentia pigmenti, and X-linked hypophosphatemic rickets (XLHR))

causes physical and intellectual disability exclusively in females. symptoms include impairments in language and coordination and repetitive movements. those affected often have slower growth, difficulty walking, and a smaller head size.

is an inherited (genetic) condition that affects the skin and other systems in the body

is characterized by hypophosphatemia, defective intestinal absorption of calcium, and rickets or osteomalacia unresponsive to vitamin D

only happens if the altered gene that causes the disorder is located on the Y chromosome. it can only be passed from father to son because only males have a Y chromosome. (e.g. ear hypertrichosis, webbed toes, and porcupine man)

is characterized by excessive body hair, especially on the ear

is a web-like connection between the second and third toes

occurs when the skin thickens and gradually becomes darker, scaly, rough, and with bristle-like outgrowths

a chart that diagrams the inheritance of a trait or health condition through generations of a family