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Updated: Jun 6, 2026

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将Lepisosteus oculatus Winchell 1864的一个下级同义词重新分配到L. platostomus Rafinesque 1820中的一个

Daniel Sinopoli1, Thomas J Near2, Solomon R David3

  • 1Department of Biological Sciences; Museum of Natural Sciences; Louisiana State University. dsinop1@lsu.edu.

Zootaxa
|December 8, 2024
PubMed
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相关概念视频

Convergent Evolution01:54

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...
Lampbrush Chromosomes01:51

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.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops resemble the...