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Related Concept Videos

Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
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Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
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The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
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Methods to Increase the Sensitivity of High Resolution Melting Single Nucleotide Polymorphism Genotyping in Malaria
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[Research progress of single nucleotide polymorphisms in forest trees.].

Yan-Guang Chu1, Xiao-Hua Su

  • 1Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of For-estry (CAF), Beijing 100091, China

Yi Chuan = Hereditas
|October 22, 2008
PubMed
Summary

Single nucleotide polymorphisms (SNPs) are valuable genetic markers for forest trees. SNP analysis aids in understanding genetic diversity, population structure, and complex traits like wood properties, accelerating forest genetics and breeding research.

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Area of Science:

  • Forestry
  • Genetics
  • Plant Science

Background:

  • Single nucleotide polymorphisms (SNPs) represent the most common genetic variation in organisms.
  • Forests are crucial components of terrestrial ecosystems, and understanding their genetic makeup is vital.
  • SNPs are emerging as powerful markers in tree genetics and breeding.

Purpose of the Study:

  • To review the application of SNPs in forest tree genetic and breeding studies.
  • To highlight the insights gained regarding nucleotide diversity, linkage disequilibrium (LD), and population structure.
  • To emphasize the utility of SNP-based association genetics for complex trait dissection.

Main Methods:

  • Sequencing and analysis of candidate genes in tree species.
  • Application of SNP markers for genetic diversity and population structure assessment.
  • SNP-based association genetics and LD mapping for trait dissection.

Main Results:

  • SNP studies have generated significant genetic information in various tree genera (Pinus, Populus, Eucalyptus, Picea).
  • Association studies in Eucalyptus and Pinus identified SNPs linked to wood property traits.
  • Genetic parameter estimations reveal evolutionary and ecological significance in tree species.

Conclusions:

  • SNP technology is a powerful tool for forest genetics and breeding.
  • SNP-based approaches accelerate the understanding of complex traits and genetic diversity in forest trees.
  • Further intensive application of SNPs is expected to drive advancements in forest research.