Pedigree

Created by

jared pahilga

Cards (12)

What is a pedigree?
A pedigree is a genetic diagram that shows family traits.
What information does a pedigree provide about family traits?
A pedigree shows traits from ancestors, the present generation, and possible future offspring.
How can a pedigree be used in genetics?
A pedigree can be used to identify and analyze sex-linked traits.
What are the three generations represented in a pedigree? 
The ancestors, the present generation, and possible future offspring.
What is Duchenne muscular dystrophy?
A hereditary disease that causes degeneration of the muscles, leading to muscle weakness
Who does Duchenne muscular dystrophy primarily affect?
It affects only males
What is the role of the mother if she is a carrier of the Duchenne muscular dystrophy trait?
The mother can pass the X chromosome with the trait to her male offspring
How does the inheritance of Duchenne muscular dystrophy occur in male offspring if the mother is a carrier?
A portion of the male offspring would inherit the trait from the mother
What chromosomes do males have that are relevant to Duchenne muscular dystrophy inheritance?
Males have one X chromosome and one Y chromosome (XY)
From which parent does the Y chromosome come in males?
The Y chromosome comes from the father
From which parent does the X chromosome come in males?
The X chromosome comes from the mother
What happens to the male offspring if the mother is a carrier of the gene for Duchenne muscular dystrophy?
A portion of the male offspring would inherit the trait