Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1972 Aug;69(8):2100-4.
doi: 10.1073/pnas.69.8.2100.

Microgeographical Variation in Allozyme Frequencies in Avena barbata

J L Hamrick  1 , R W Allard
Affiliations

Microgeographical Variation in Allozyme Frequencies in Avena barbata

J L Hamrick et al. Proc Natl Acad Sci U S A. 1972 Aug.

Abstract

Microgeographical distribution of alleles of five enzyme loci and one morphological variant has been determined within populations of A. barbata occupying sites that are transitional between different vegetational zones. The results show that the spatial distribution of alleles is nonrandom and highly correlated with habitat in patterns that parallel the distribution of the same alleles in major climatic zones in California. It is concluded that the observed patterns of variation are best explained by Neo-Darwinian evolutionary models, in which selection plays a predominant role.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Proc Natl Acad Sci U S A. 1972 Jul;69(7):1820-4 - PubMed
    1. Genetics. 1966 Jul;54(1):159-71 - PubMed
    1. Genetics. 1970 Sep;66(1):133-45 - PubMed
    1. Genetics. 1970 Oct;66(2):393-9 - PubMed

LinkOut - more resources