Frequent question: What are the symbols in pedigrees?

What do Shaded symbols represent on a pedigree?

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 are the parts of a pedigree?

The Components of a Pedigree:



Squares are used to indicate males in a family. Circles are used to indicate females. If the individual is “affected” by the trait (dominant or recessive) we darken the shape. A line between a male and a female indicates a marriage or union.

What does P mean on a pedigree chart?

P. Comments. Assign gender by phenotype.

What are solid symbols?

Symbols in Chemical Equations

Symbol Meaning
(s) indicates that the substance is in a solid state
an alternative way of representing a substance in a solid state
(aq) indicates that the substance is dissolved in water – the aq comes from aqueous
indicates that heat is applied to make the reaction proceed

What do half colored symbols represent?

What do half colored symbols represent? The individual is a carrier. The individual expresses the trait. The individual has both recessive alleles.

What is a half shaded circle called?

What is a half shaded circle called? In geometry, the half circle is referred to as the semicircle.

IT IS INTERESTING:  You asked: What best defines a pedigree?

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 do you show a dead person on a pedigree?

Individuals who are deceased have a slash through the symbol representing them. Symbols for individuals affected by a particular disorder are shaded. Carriers can be represented by a half-shaded symbol or by a dot in the middle of a symbol.

Family heirloom