Un solo gen afecta tanto a la divergencia ecológica como a la elección de pareja en Drosophila

Henry Chung1, David W Loehlin, Héloïse D Dufour

  • 1Howard Hughes Medical Institute and Laboratory of Molecular Biology, University of Wisconsin, Madison, WI 53706, USA.

Science (New York, N.Y.)
|February 15, 2014
PubMed
Resumen

Los hidrocarburos cuticulares ramificados en metilo (mbCHC) tienen un impacto tanto en la tolerancia a la sequía como en la selección de pareja en Drosophila. Los cambios en la producción de mbCHC, impulsados por factores ecológicos, probablemente contribuyen al aislamiento reproductivo entre especies.

Videos de Conceptos Relacionados

Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
5.8K
The Ratio of X Chromosome to Autosomes02:45

The Ratio of X Chromosome to Autosomes

In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.  
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
11.5K
Genetics of Speciation02:16

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.0K