In this family pedigree, black squares indicate the presence of a particular trait in a male, and white squares represent males without the trait. White circles are females.
What does a white square mean in a pedigree?
In a pedigree, a circle represents a female, and a square represents a male. A filled-in circle or square shows that the individual has the trait being studied.
What does a triangle mean in terms of a pedigree?
A triangle is used for any pregnancy not carried to term. … Pregnancy (P), Stillbirth (SB), Spontaneous abortion (SAB), Termination of pregnancy (TOP), Ectopic pregnancy (ECT).
How many generations are shown in this pedigree?
(7.4) Pedigree flashcards
|How many generations are shown on this pedigree?,||3 generations are shown.|
|Which individual is a female affected by the trait of interest?,||I-2 is the affected female.|
|Which individual is a male affected by the trail of interest?,||III-2 is the affected male.|
What does it mean if the pedigree is shaded?
A half-shaded circle or square indicates that a person is a carrier of the trait. A completely shaded circle or square indicates that a person expresses the trait. A circle or square that is not shaded indicates that a person neither expresses the trait nor is a carrier of the trait.
What does P mean on a pedigree chart?
P. Comments. Assign gender by phenotype.
Are circles male or female?
The use of shapes as gender symbols may have originated from kinship diagrams in anthropology, where a circle represents a female and a triangle represents a male.