Human Pedigree Flashcards
What is a human pedigree?
A map of the relationships in a family
It also shows a certain trait.
What symbol represents a male in a human pedigree?
Square
What symbol represents a female in a human pedigree?
Circle
What symbol represents an affected male in a human pedigree?
Filled square
What symbol represents an affected female in a human pedigree?
Filled circle
What symbol indicates sex unknown in a human pedigree?
Diamond
What symbol represents a deceased individual in a human pedigree?
Diagonal line through the symbol
What does the line between two symbols represent in a human pedigree?
Mating
What does consanguineous mating refer to?
Mating between relatives
What symbol represents children in a human pedigree?
Vertical line descending from the mating line
What does a double line between two symbols indicate?
Consanguineous mating
What symbol represents divorced or separated individuals in a human pedigree?
Two symbols connected by a slash
What does a pair of connected circles or squares represent in a human pedigree?
Twins
What does a line connecting two filled circles indicate?
Identical twins
