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Genomics02:02

Genomics

35.5K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

7.8K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Next-generation Sequencing03:00

Next-generation Sequencing

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
87.9K
Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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Genetic Screens02:46

Genetic Screens

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Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
4.6K
Human Genetics01:28

Human Genetics

2.0K
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER
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Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER

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Minería del proyecto del genoma humano.

E Birney1, A Bateman, M E Clamp

  • 1The European Bioinformatics Institute, Hinxton, Cambridge, UK. birney@ebi.ac.uk

Nature
|March 10, 2001
PubMed
Resumen
Este resumen es generado por máquina.

La secuencia del genoma humano presenta desafíos para la identificación de genes. Los métodos actuales luchan con la complejidad de los genomas más grandes, especialmente en los vertebrados.

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Área de la Ciencia:

  • La genómica es la genómica.
  • La bioinformática es la bioinformática.
  • Biología computacional Biología computacional.

Sus antecedentes:

  • La disponibilidad del proyecto de secuencia del genoma humano ha aumentado el interés en su aplicación.
  • Hay una sobreestimación de la facilidad con la que las nuevas secuencias del genoma se pueden traducir en listas de genes.
  • Los genomas de los vertebrados, en particular, plantean desafíos analíticos significativos debido a su tamaño y complejidad.

Objetivo del estudio:

  • Para resaltar los desafíos en el análisis de los genomas de vertebrados.
  • Para evaluar las limitaciones de las metodologías actuales de predicción de genes.
  • Hacer hincapié en la necesidad de una mejor comprensión y herramientas para el análisis del genoma.

Principales métodos:

  • Revisión de los métodos actuales de predicción de genes.
  • Análisis de la complejidad asociada con grandes conjuntos de datos del genoma.
  • Discusión de la escala del análisis del genoma de los vertebrados.

Principales resultados:

  • La predicción de genes a partir de secuencias de genomas recientemente disponibles es más compleja de lo esperado.
  • Las herramientas de predicción genética existentes tienen limitaciones cuando se trata de genomas complejos.
  • El análisis de los genomas de los vertebrados es un desafío computacional y biológico significativo.

Conclusiones:

  • Se requiere una mayor apreciación de la escala y la complejidad del análisis del genoma de los vertebrados.
  • Los métodos actuales de predicción genética son insuficientes para un análisis exhaustivo de genomas complejos.
  • Son necesarios nuevos avances en la bioinformática y la comprensión de las estructuras genómicas.