Pedigrees A genetic family tree

A genetic family tree

Pedigree What is it? A Genetic Family tree Used to analyze how traits and/or diseases are inherited.

What is it?

A Genetic Family tree

Used to analyze how traits and/or diseases are inherited.

Example

Symbols Females = Males = Affected Individuals = Mating (or marriage) =

Females =

Males =

Affected Individuals =

Mating (or marriage) =

Offspring Symbols Offspring listed in birth order from left to right Twins: Identical Non-Identical

Offspring listed in birth order from left to right

Twins:

Identical

Non-Identical

Example Dachshunds have many, many, many coat length, color and pattern possibilities and combinations Smooth, longhair, and wire-haired are possible hair lengths Red, Black, Tan, Chocolate, Isabel, Cream... just a few examples of colors

Dachshunds have many, many, many coat length, color and pattern possibilities and combinations

Smooth, longhair, and wire-haired are possible hair lengths

Red, Black, Tan, Chocolate, Isabel, Cream... just a few examples of colors

My Baby Annie

Annie

Coat Patterns Many possible patterns Annie is a Dapple Dapple means the colors are mixed with white in a random, asymmetrical pattern

Many possible patterns

Annie is a Dapple

Dapple means the colors are mixed with white in a random, asymmetrical pattern

Annie’s Family

Annie’s Pedigree Dapple Trait

A Genetics Link http://learn.genetics.utah.edu/units/disorders/pedigree/mapgene.cfm

http://learn.genetics.utah.edu/units/disorders/pedigree/mapgene.cfm