相关实验视频

Updated: Jan 9, 2026

Genome-wide Snapshot of Chromatin Regulators and States in Xenopus Embryos by ChIP-Seq
10:23

Genome-wide Snapshot of Chromatin Regulators and States in Xenopus Embryos by ChIP-Seq

Published on: February 26, 2015

12.9K

评估全基因组重复对蜘蛛发育过程中的基因表达和调节的影响

Madeleine E Aase-Remedios1, Daniel J Leite1, Ralf Janssen2

  • 1Department of Biosciences, Durham University, Durham DH1 3LE, UK.

Genome biology and evolution
|December 6, 2025
PubMed
概括

在蜘蛛肺动物中,全基因组复制 (WGD) 导致了基因复制 (ohnologues). 蜘蛛类的表达低于收割者类的表达,这表明亚功能化,但染色质的可访问性不同.

关键词:
它们是蜘蛛类的蜘蛛.进化 演化 演化 演化 演化 演化 演化 演化基因调节 基因调节 基因调节蜘蛛 蜘蛛 是 一种 蜘蛛.整个基因组的重复复制.

更多相关视频

Determining Genetic Expression Profiles in C. elegans Using Microarray and Real-time PCR10:27

Determining Genetic Expression Profiles in C. elegans Using Microarray and Real-time PCR

Published on: July 30, 2011

23.7K
Chromatin Immunoprecipitation ChIP using Drosophila tissue13:47

Chromatin Immunoprecipitation ChIP using Drosophila tissue

Published on: March 23, 2012

25.7K

相关概念视频

Gene Duplication and Divergence02:37

Gene Duplication and Divergence

The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
7.8K
Dosage Compensation02:50

Dosage Compensation

In animals, gender is determined by the number and type of sex chromosome. For example, human females have two X chromosomes, and males have one X and one Y chromosome, whereas C.elegans with one X chromosome is a male, and the one with two X chromosomes is a hermaphrodite.
In addition to sexual development, the X chromosome has genes involved in autosomal functions such as brain development and the immune system. Therefore, males and females with  distinct numbers of X chromosomes will...
7.0K
Exon Recombination02:32

Exon Recombination

The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes. 
Exon shuffling follows “splice frame rules.” Each exon...
4.1K
Gene Families01:57

Gene Families

Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
9.7K
Polytene Chromosomes02:04

Polytene Chromosomes

Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also...
10.8K
Position-effect Variegation02:32

Position-effect Variegation

In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
7.0K