PMID: 1203058Oct 1, 1975Paper

High genetic variability in an ecologically variable vertebrate, Bufo viridis

Biochemical Genetics
H C DessauerK C Chuang

Abstract

Allozymic variation in proteins encoded by 26 loci was analyzed electrophoretically in 517 specimens of green toads from 11 populations from Israel and one population from Vis Island in the Adriatic Sea. Genetic variation in this toad is the highest yet reported in any vertebrate. All three genetic parameters, mean number of alleles per locus (A), mean proportion of loci polymorphic per population (P), and mean number of heterozygous loci per individual (H), are very high (A = 1.65, range 1.38-2.04; P = 0.423, range 0.346-0.615; H = 0.133, range 0.108-0.159). Central and marginal mainland populations are only slightly more variable than desert isolates, but much more variable than the Vis Island population. Genetic similarity is very high between mainland populations (S = 0.951, range 0.93-0.97). Frequencies of two alleles (Icd-lc and Tfa) are correlated with an ecological gradient of increasing aridity. Regulatory enzymes appeared to contribute more to overall polymorphism than non-regulatory enzymes. The genetic variation observed suggests that selection for heterozygosity as an adaptive strategy is operating in the ecologically variable environment in which green toads live.

References

Jun 1, 1975·Proceedings of the National Academy of Sciences of the United States of America·E NevoK C Chuang
Apr 1, 1970·Biochemical Genetics·C R Shaw, R Prasad
Apr 5, 1974·Science·G B Johnson
Jun 1, 1973·Proceedings of the National Academy of Sciences of the United States of America·R K Selander, D W Kaufman
Jan 1, 1973·Annual Review of Genetics·R C Lewontin
Dec 1, 1972·Biochemical Genetics·E Nevo, C R Shaw
Apr 1, 1969·Biochemical Genetics·H C Dessauer, E Nevo
Jul 22, 1967·Nature·W H Lewis, H Harris
Apr 1, 1964·Biochemistry·W W CLELAND
Mar 1, 1974·Evolution; International Journal of Organic Evolution·Eviatar NevoCharles S Thaeler
Mar 1, 1975·Evolution; International Journal of Organic Evolution·George C GormanEviatar Nevo

❮ Previous
Next ❯

Citations

Dec 1, 1982·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·E Nevo, S Y Yang
Aug 1, 1977·Biochemical Genetics·D F GartsideT Joanen
Jun 1, 1980·Biochemical Genetics·C N GardenalA Blanco
Feb 1, 1978·Theoretical Population Biology·E Nevo
Dec 1, 1979·Evolution; International Journal of Organic Evolution·Kent E Schwaegerle, Barbara A Schaal
Jul 1, 1979·Oecologia·Eviatar Nevo, Shu Y Yang
Feb 7, 2020·Scientific Reports·Pedro PiñeroJosep Vallverdú
Jun 1, 1978·Evolution; International Journal of Organic Evolution·Donald A Levin
Sep 1, 1977·Evolution; International Journal of Organic Evolution·Donald A Levin
Dec 1, 1979·Evolution; International Journal of Organic Evolution·Juliana H Feder
Sep 1, 1978·Evolution; International Journal of Organic Evolution·L J McDonnellM J Littlejohn

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.