相关实验视频

Updated: Jul 19, 2026

Sex Stratified Neuronal Cultures to Study Ischemic Cell Death Pathways
10:44

Sex Stratified Neuronal Cultures to Study Ischemic Cell Death Pathways

Published on: December 9, 2013

性与死亡:有什么联系?

Linda Partridge1, David Gems, Dominic J Withers

  • 1UCL Centre for Research on Ageing, Department of Biology, University College London, Darwin Building, Gower Street, London WC1E 6BT, United Kingdom. l.partridge@ucl.ac.uk

Cell
|March 1, 2005
PubMed
概括

生殖成本将寿命和生育能力联系在一起. 然而,饮食限制 (DR) 和胰岛素/IGF信号 (IIS) 显示寿命延长而没有降低生育能力,挑战了这一联系.

更多相关视频

Microscopy of Fission Yeast Sexual Lifecycle07:47

Microscopy of Fission Yeast Sexual Lifecycle

Published on: March 9, 2016

Volatile Sex Pheromone Extraction and Chemoattraction Assay in Caenorhabditis elegans06:49

Volatile Sex Pheromone Extraction and Chemoattraction Assay in Caenorhabditis elegans

Published on: August 9, 2024

相关概念视频

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 Drosophila...
Sex Linked Disorders01:43

Sex Linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
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 have...
Primary Motives: Sleep, Sex, and Pain Avoidance01:24

Primary Motives: Sleep, Sex, and Pain Avoidance

Primary motives such as sleep, sex, and pain avoidance are crucial drivers of behavior in humans and animals. These motives ensure survival, reproductive success, and overall well-being by prompting actions that meet essential bodily needs.
Sleep is a fundamental physiological drive that fosters a state of restfulness crucial for several bodily functions. It facilitates body restoration, the process by which the body repairs, rejuvenates, and maintains itself during sleep, including memory...
Psychosexual Stages of Personality: Genital01:23

Psychosexual Stages of Personality: Genital

The genital stage is the final phase of Sigmund Freud's theory of psychosexual development, beginning at puberty, around age 12. During this stage, sexual energy shifts from self-focused interests to external individuals, marking the development of mature adult sexuality. Freud saw this phase as a time of sexual reawakening, with desires directed toward others outside the family. A healthy transition into this stage, according to Freud, signifies the emergence of two key aspects of adult...
Psychosexual Theory of Development01:14

Psychosexual Theory of Development

Sigmund Freud's psychosexual theory of development suggests that early childhood experiences significantly shape personality and behavior. Freud proposed that development is discontinuous, occurring in five distinct stages, each defined by a focus on different erogenous zones. He believed that failure to resolve the conflicts specific to each stage successfully could result in fixation, potentially influencing behavior as adults.
The Five Stages of Psychosexual Development
Freud's psychosexual...