相关实验视频

Updated: Jul 19, 2025

In situ Protocol for Butterfly Pupal Wings Using Riboprobes
06:19

In situ Protocol for Butterfly Pupal Wings Using Riboprobes

Published on: May 28, 2007

11.0K

蝶的基体组成,体使用和基因序列进化的模式

Karin Näsvall1, Jesper Boman1, Venkat Talla1

  • 1Evolutionary Biology Program, Department of Ecology and Genetics (IEG), Uppsala University, Uppsala, Sweden.

Genome biology and evolution
|August 11, 2023
PubMed
概括

像突变偏差和GC偏差基因转换 (gBGC) 这样的进化力量塑造了Lepidoptera中的基因序列. 选择作用于代码子的使用,影响与突变和gBGC一起的替代模式.

关键词:
莱普蒂迪亚 (Leptidea) 是一种类动物.基因转换的GC偏差转换.codon 使用偏差进行比较的基因组学.替代率是指替代率的使用率.我们的基因是tRNA基因.

更多相关视频

Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations07:17

Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations

Published on: October 28, 2022

1.6K
Mass-Rearing and Molecular Studies in Tortricidae Pest Insects06:22

Mass-Rearing and Molecular Studies in Tortricidae Pest Insects

Published on: March 25, 2022

2.8K

相关概念视频

Speciation Rates01:07

Speciation Rates

Overview
21.3K
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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...
5.8K
Cis-regulatory Sequences02:02

Cis-regulatory Sequences

Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
9.9K
Mutation, Gene Flow, and Genetic Drift01:09

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).
58.5K
Pollination and Flower Structure02:40

Pollination and Flower Structure

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.  
65.0K
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...
7.2K