ALFRED Basic Search
      The ALlele FREquency Database   
ALFRED is a resource of gene frequency data on human populations
supported by the Yale Center for Medical Informatics.

Search for Frequencies

Use the character "%" for a wildcard.

Locus Name (eg Alcohol Dehydrogenase 1B%) Show All
Locus Symbol (eg ADH1B)
Chromosomal Band Position
Polymorphism Name (eg "%RsaI%")
Typing Method:
Frequency can include a range (eg 0.5-0.75, >=0.5)
Estimated Heterozygosity
Heterozygosity can include a range (eg 0.5-0.75, >=0.5)
Polymorphism Description
Entry Date
=MM/DD/YYYY for equal to a date
>MM/DD/YYYY for greater than a date
< MM/DD/YYYY for less than a date
Population Show All

Display: ( Locus Symbol , Allele Name , Allele Symbol , Frequency ID Entry Date , Contributor ID , Chromosome , Chromosomal Band Position )

Semicolon Delimited Output?

Number of frequencies to show

© 2019 Kenneth K Kidd, Yale University. All rights reserved. The full Copyright Notification is also available.
Originally prototyped by Michael Osier with the aid of Kei Cheung
Upgrades and maintenance since 2002 by Haseena Rajeevan