Androgen receptors in two androgen-mediated, sexually dimorphic characters of frogs

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Dissection of Larval Zebrafish Gonadal Tissue
10:43

Dissection of Larval Zebrafish Gonadal Tissue

Published on: April 26, 2017

S B Emerson1, A Greig, L Carroll

  • 1Department of Biology, University of Utah, Salt Lake City, Utah, 84112, USA. emerson@biology.utah.edu

General and Comparative Endocrinology
|April 20, 1999
PubMed

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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.
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Lampbrush Chromosomes

In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
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Evolution
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