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Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
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Related Experiment Video

Updated: May 12, 2026

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)
05:55

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)

Published on: June 16, 2018

The B73 maize genome: complexity, diversity, and dynamics.

Patrick S Schnable1, Doreen Ware, Robert S Fulton

  • 1Center for Plant Genomics, Iowa State University, Ames, IA 50011, USA.

Science (New York, N.Y.)
|December 8, 2009
PubMed
Summary
This summary is machine-generated.

Researchers have sequenced the maize genome, revealing over 32,000 genes and the significant role of transposable elements in its structure and evolution. This improved genome sequence provides insights into maize domestication and agricultural advancements.

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Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
10:28

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

Related Experiment Videos

Last Updated: May 12, 2026

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)
05:55

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)

Published on: June 16, 2018

Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
07:26

Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy

Published on: July 29, 2019

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
10:28

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

Area of Science:

  • Genomics
  • Plant Biology
  • Molecular Biology

Background:

  • Maize (Zea mays) is a vital crop and a model organism for plant research.
  • Understanding its large genome is crucial for agricultural improvements.

Purpose of the Study:

  • To present an improved draft nucleotide sequence of the maize genome.
  • To analyze the genomic architecture, including gene content and transposable elements.
  • To investigate the impact of genomic features on centromere structure and ploidy.

Main Methods:

  • High-throughput sequencing and assembly of the maize genome.
  • Gene prediction and annotation.
  • Analysis of transposable elements, centromeres, and copy number variants.

Main Results:

  • An improved 2.3-gigabase maize genome sequence with over 32,000 predicted genes, 99.8% mapped to chromosomes.
  • Transposable elements constitute nearly 85% of the genome, influencing gene fragments and centromere characteristics.
  • Correlations identified between methylation, transposon insertions, recombination, and copy number variants.

Conclusions:

  • The study provides a comprehensive genomic resource for maize.
  • Transposable elements play a critical role in shaping the maize genome and its evolution.
  • Findings offer a foundation for future research on maize domestication and breeding.