Chicken Alligator
Chicken Alligator - Related Videos
06:10
Gene Transfer into Older Chicken Embryos by ex ovo Electroporation
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Cited by 2 •
2012
A method of gene transfer into chicken embryos at later incubation stages (older than Hamburger and Hamilton stage (HH) 22) is described. This method overcomes disadvantages of in ovo electroporation applied to older chicken embryos and is a useful technique to study gene function and regulation at older developmental stages.
10:14
In Ovo Electroporation in the Chicken Auditory Brainstem
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Cited by 6 •
2017
Auditory brainstem neurons of avians and mammals are specialized for fast neural encoding, a fundamental process for normal hearing functions. These neurons arise from distinct precursors of embryonic hindbrain. We present techniques utilizing electroporation to express genes in the hindbrain of chicken embryos to study gene function during auditory development.
03:33
Visualization of Neural and Vascular Networks in a Chicken Embryo
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2025
Source: Delalande, J., et.al. Dual Labeling of Neural Crest Cells and Blood Vessels Within Chicken Embryos Using ChickGFP Neural Tube Grafting and Carbocyanine Dye DiI Injection. J. Vis. Exp. (2015)This video demonstrates the transplantation of a GFP-labeled donor neural tube from a stage-matched transgenic chicken embryo into a recipient embryo at the level of somites one to seven, followed by vascular labeling using a lipophilic fluorescent dye. The combined approach allows for direct...
11:16
Preparation and Culture of Chicken Auditory Brainstem Slices
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Cited by 17 •
2011
The chicken auditory brainstem is comprised of nuclei responsible for binaural sound processing. A single coronal slice preparation maintains the entire circuitry while the cultured approach provides a unique preparation to study the development of neuronal structure and auditory function at the molecular, cellular and network levels.
04:44
Renal Organotypic Culture on Chicken CAM: A Technique for Transplantation of Murine Kidney Explants on Chicken CAM to Induce Formation of Renal Vascular Architecture
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2023
This video describes a method for studying organ development using an improved xenotransplantation setup on chorioallantoic membrane (CAM) from avian embryos. This method allows for the development of fully vascularized cultured embryonic organs and organoids.
FAQs
Reproductive isolation acts at several stages, not merely at mating. Chicken and alligator gametes are incompatible, so they cannot normally combine to produce a viable embryo. Even if reproductive barriers were hypothetically bypassed, differences in chromosomes, gene regulation, and developmental programs would interfere with coordinated embryonic development. These barriers explain why shared ancestry does not make hybrid formation possible.
Chromosome differences matter because successful embryonic development requires genetic material to be organized and regulated compatibly. Gene regulation controls when and where developmental instructions operate, while embryonic development coordinates those instructions across growing tissues. In chicken-alligator comparisons, these differences help researchers distinguish deeply conserved biological pathways from those associated with particular evolutionary lineages.
Shared archosaur ancestry provides a basis for comparison, but it does not predict identical traits. Some features and developmental pathways may remain conserved, whereas others evolved independently in the lineages leading to birds and alligators. Comparing both therefore helps separate inherited similarities from independently evolved characteristics.
A comparative study can examine anatomy, embryonic development, evolutionary relationships, and genetic pathways in the two organisms. Researchers then ask which characteristics or developmental signals occur in both and which are restricted to one lineage. This approach uses the pair as complementary evidence for conserved biology and evolutionary change.
Because birds and alligators share archosaur ancestry, their similarities can provide context for interpreting avian traits within a broader reptile history. This comparison can clarify which features may reflect inherited archosaur biology and which arose along the bird lineage. It also links birds to dinosaur relatives through evolutionary context.
The comparison supports developmental biology by showing how related organisms can retain shared developmental pathways while differing in gene regulation and embryonic processes. Examining these contrasts helps researchers connect embryonic traits with evolutionary history and identify changes that distinguish bird development from alligator development.