scholarly journals Genetic Evidence for the Proto-Austronesian Homeland in Asia: mtDNA and Nuclear DNA Variation in Taiwanese Aboriginal Tribes

1998 ◽  
Vol 63 (6) ◽  
pp. 1807-1823 ◽  
Author(s):  
Terry Melton ◽  
Stephanie Clifford ◽  
Jeremy Martinson ◽  
Mark Batzer ◽  
Mark Stoneking
Keyword(s):  
Nuclear Dna ◽  
Genetic Evidence ◽  
Dna Variation ◽  
Nuclear Dna Variation

Mitochondrial and nuclear DNA variation, genotype fingerprinting and genetic relationships in lentil (Lens culinaris Medik.)

1997 ◽  
Vol 77 (4) ◽  
pp. 515-521 ◽  
Author(s):  
Om P. Rajora ◽  
John D. Mahon
Keyword(s):  
Mitochondrial Dna ◽  
Restriction Fragment ◽  
Lens Culinaris ◽  
Nuclear Dna ◽  
Genetic Relationships ◽  
Restriction Enzymes ◽  
Dna Variation ◽  
Apocytochrome B ◽  
Nuclear Dna Variation ◽  
Mean Similarity

Mitochondrial DNA (mtDNA) and nuclear DNA (nuDNA) variations were examined in six cultivars of Lens culinaris ssp. culinaris and two (mtDNA) or one (nuDNA) accession(s) of L. culinaris ssp. orientalis. Total leaf DNA was digested with up to 15 restriction endonucleases, separated by agarose gel electrophoresis and trasferred to nylon membranes. To examine mtDNA variation, blots were probed with mtDNA coding for cytochrome c oxidase I (coxI) and ATPase 6 (atp6) of both wheat and maize as well as apocytochrome b (cob) and Orf25 (orf25) of wheat. Sixteen combinations of mtDNA probes and restriction enzymes revealed 34 fragments that discriminated between at least two lentil accessions. For nuDNA analysis, probes from cDNA and genomic DNA clones of lentil were used to probe the same blots, and identified 46 diagnostic fragments from 19 probe/enzyme combinations. Each lentil accession could be unequivocably distinguished from all others on the basis of both mitochondrial and nuclear DNA fragment patterns. The mitochondrial restriction fragment similarities ranged from 0.944 to 0.989, with a mean of 0.970 but nuclear restriction fragment similarities varied from 0.582 to 0.987, with a mean of 0.743. The apparent genetic relationships among accessions differed according to the source of DNA examined, although the commercial varieties Laird, Brewer and Redchief showed similarly high levels of mean similarity with both nuclear (0.982) and mitochondrial DNA (0.983). Key words: Lens culinaris Medik., genetic variation, mitochondrial, nuclear, DNA, lentil

Nuclear DNA variation in Eu-Sorghums

Chromosoma ◽  
1971 ◽  
Vol 32 (4) ◽  
Author(s):  
R.S. Paroda ◽  
H. Rees
Keyword(s):  
Nuclear Dna ◽  
Dna Variation ◽  
Nuclear Dna Variation

Nuclear DNA variation among acridid grasshoppers

1978 ◽  
Vol 202 (1149) ◽  
pp. 517-525 ◽  
Keyword(s):  
Genetic Divergence ◽  
Large Scale ◽  
Nuclear Dna ◽  
Dna Amount ◽  
Dna Variation ◽  
Nuclear Dna Amount ◽  
Nuclear Dna Variation ◽  
Chromosome Material ◽  
Scale Variation

The nuclear DNA amount varies threefold among species of acridid grass­ hoppers. DNA amount is correlated with the total chromosome volume, as measured at metaphase of mitosis. Despite the large-scale variation in DNA amount and in the total volume of chromosome material there is a striking uniformity in respect of the relative sizes of chromosomes within complements. Males from the northern race of Cryptobothrus chrysophorus contain about 20% more nuclear DNA than males from the southern race. The DNA difference may be explained by supernumerary segments within chromosomes in the northern populations. The magnitude of the DNA variation between these races is indicative of substantial genetic divergence. It may well be that the two races merit separate specific ranking.

Nuclear DNA variation in Lathyrus

Chromosoma ◽  
1976 ◽  
Vol 54 (2) ◽  
pp. 141-154 ◽  
Author(s):  
R. K. J. Narayan ◽  
H. Rees
Keyword(s):  
Nuclear Dna ◽  
Dna Variation ◽  
Nuclear Dna Variation
Sign in / Sign up

Export Citation Format

Share Document