1 / 4

Pedigrees

Pedigrees. It is a diagram that shows how a trait is inherited through several generations. Squares = males Circles = females Shaded = individual has the trait or condition Unshaded = individual does not have trait or condition horizontal line = marriage

dreama
Download Presentation

Pedigrees

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Pedigrees

  2. It is a diagram that shows how a traitis inherited through several generations. • Squares = males • Circles = females • Shaded = individualhas the trait or condition • Unshaded = individual does not have trait or condition • horizontal line = marriage • vertical line = offspring, arranged from left to right in order of birth • Roman numerals - label different generations What is a Pedigree? Sounds like a dog food.

  3. By analyzing patterns of inheritance, biologists can learn about genetic diseases. • If a trait is autosomal, it willappear in both sexes equally and if it is sex-linked, it is usually seen only in males. • The major use of pedigree analysis is in clinical evaluation and counseling of patients with inherited abnormalities. Patterns of Inheritance

  4. Pedigree for the Albino Trait • Pedigree for a Sex Linked Trait Human geneticists illustrate the inheritance of a gene within a family by using a pedigree chart.

More Related