Video Experimental Relacionado

Updated: May 6, 2026

RNAi-mediated Double Gene Knockdown and Gustatory Perception Measurement in Honey Bees Apis mellifera

RNAi-mediated Double Gene Knockdown and Gustatory Perception Measurement in Honey Bees Apis mellifera

Published on: July 25, 2013

Determinación del sexo en las abejas melíferas

Brian Charlesworth¹

¹Institute of Cell, Animal, and Population Biology, University of Edinburgh, Ashworth Laboratories, EH9 2BR, Edinburgh, United Kingdom.

|August 28, 2003

Resumen

Las abejas melíferas determinan el sexo a través de un único locus genético. El gen del determinante de sexo complementario (csd) recién clonado, cuando se inactiva, da como resultado el desarrollo masculino, revelando su papel crucial en la determinación del sexo.

Área de la Ciencia:

Genética La genética.
Biología Molecular Biología Molecular
Entomología Entomología.

Sus antecedentes:

La determinación del sexo de las abejas melíferas está controlada por un solo locus genético con múltiples alelos.
Los genotipos homocigotos en este locus dan lugar al desarrollo masculino, mientras que los genotipos heterocigotos dan lugar al desarrollo femenino.

Objetivo del estudio:

Clonar y caracterizar el gen que determina el sexo en las abejas.
Comprender las bases moleculares de la determinación del sexo en los himenópteros.

Principales métodos:

Se emplearon técnicas de clonación genética para aislar el gen que determina el sexo.
El análisis funcional involucró estudios de inactivación génica.

Principales resultados:

El gen que determina el sexo, el determinante de sexo complementario (CSD), fue clonado con éxito.
El gen csd codifica una proteína SR con secuencias de aminoácidos muy variables entre diferentes alelos.
La inactivación del gen csd hizo que los individuos se desarrollaran como machos.

Conclusiones:

El gen CSD es el principal determinante del sexo en las abejas.
La variación alélica en la CDS es crucial para distinguir entre machos y hembras.
La proteína SR codificada por csd juega un papel crítico en el desarrollo femenino.

Más Videos Relacionados

Preparation of Single-cohort Colonies and Hormone Treatment of Worker Honeybees to Analyze Physiology Associated with Role and/or Endocrine System

Preparation of Single-cohort Colonies and Hormone Treatment of Worker Honeybees to Analyze Physiology Associated with Role and/or Endocrine System

Published on: September 6, 2016

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Published on: October 5, 2018

Videos de Conceptos Relacionados

What is a Species?

What is a Species?

Frequency-dependent Selection

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.

Genetics of Speciation

Genetics of Speciation

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

Background and Environment Affect Phenotype

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...

The Ratio of X Chromosome to Autosomes

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...

Dosage Compensation

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...