Best answer: What does P mean on a pedigree chart?

P. Comments. Assign gender by phenotype.

What does P stand for on a pedigree chart?

P stands for pregnancy – mother carrying a male, female, or unknown gender.

What do the symbols mean in a pedigree?

Overview of a Pedigree

A pedigree, also known as a genogram, is a diagram that depicts individuals who are related by blood or another factor. … For example, a square icon indicates a male individual, a circle icon indicates a female individual, and a diamond icon indicates an individual of unknown/undetermined gender.

What are the symbols of a pedigree chart?

Pedigree Chart Symbols

Pedigree charts are plotted using regular symbols and format. Males are depicted by squares and females are represented by a circle. People that are dead are represented by a diagonal line across the symbol. Symbols are shaded when people are affected by a given condition.

Is PP genotype or phenotype?

There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).

What does a diamond mean in a pedigree?

Pregnancy symbols: Use a diamond if the gender is not yet known, a circle or a square if the gender is known. A triangle is used for any pregnancy not carried to term. Include gestational age, or estimated date of delivery (EDD) for all pregnancies.

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What does a horizontal line represent in a pedigree?

A horizontal line connecting a male and female represents a marriage. A vertical line and a bracket connect the parents to their children. 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.

What does an asterisk mean on a pedigree?

The asterisk symbol represents the sequenced individuals in this study. The genotyping of alleles were shown below the individuals.

How is a pedigree numbered?

Each generation is identified by a Roman numeral (I, II, III, and so on), and each individual within the same generation is identified by an Arabic numeral (1, 2, 3, and so on). … This individual, known as the proband, is indicated on the pedigree by an arrow. These changes may occur yearly or monthly.

What is Y linked pedigree?

Y-linked inheritance. Pedigree analysis of a Y-linked trait. Y-linked traits never occur in females, and occur in all male descendants of an affected male. The concepts of dominant and recessive do not apply to Y-linked traits, as only one allele (on the Y) is ever present in any one (male) individual.