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Updated: Jun 11, 2025

Dissection and Live-Imaging of the Late Embryonic Drosophila Gonad
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Dissection and Live-Imaging of the Late Embryonic Drosophila Gonad

Published on: October 17, 2020

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索马到胚芽线的BMP信号对于多索菲拉的精子生成至关重要

Emma Kristine Beard1, Rachael P Norris1, Miki Furusho1

  • 1Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, 06032, USA.

Developmental biology
|October 3, 2024
PubMed
概括

来自索马的骨型遗传蛋白 (BMP) 信号传递对于果精子发育至关重要. 这项研究表明,来自支持细胞的玻璃底船 (Gbb) 确保了适当的精子头捆绑和生育能力.

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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...
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Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
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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...
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Development of the reproductive organs in an embryo starts from a bipotential state. This means the early embryo can develop either male or female reproductive organs. The formation of these organs begins with the growth of gonadal ridges that arise from the intermediate mesoderm during the fifth week of development.
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the...
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