Answer :
Pedigrees and Inheritance Methods:
A pedigree is a chart that shows the blood connections between family members as well as which members of the family exhibit the trait or condition under investigation.
Pedigree Markers:
The pedigree symbols in the figures in this article are typical. Males are represented by squares, females by circles, while transgender or gender-neutral people are shown as diamonds for privacy purposes. Consanguineous marriages (marriages between blood relations) are indicated by a double line between the parents .
Individuals who exhibit a certain attribute, such as a hereditary sickness, are represented by filled symbols. Genetic loci are represented by bars next to the symbols, and distinct alleles are color-coded. Mutations that cause disease are depicted as stars or crosses. Half-filled symbols denote heterozygous individuals, but frequently this information is unknown.
Building a pedigree is frequently the first step in finding a gene variant that causes a specific disease or feature. There are several words used in pedigree analysis.
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