File:Amphibian oocyte transcription.jpg: Difference between revisions

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Amphibian oocyte transcription

Amphibian oocyte nuclei contain numerous extra-chromosomal nuclei, each of which contains a tandem array of genes encoding ribosomal RNA. Active transcription is seen by the tree-like structures in which each branch represents a growing transcript. Untranscribed spacer DNA is seen between each transcript.

Methods developed by O.L. Miller Jr. and colleagues, the extra-chromosomal nuclei from a newt oocyte have been dispersed in low salt, and centrifuged through a sucrose cushion containing formaldehyde on to a carbon coated grid.

Links: Molecular Development - Ribonucleic acid

Reference

Fawcett DW. The Cell Chapter 4 Nucleus, Figure 144.

Micrograph courtesy of Oscar Miller.

Original Image: The Cell: An Image Library CIL:11043 http://www.cellimagelibrary.org/images/11043 original image has been rotated 90 degrees.

Copyright

Licensing: Attribution Non-Commercial; No Derivatives:This image is licensed under a Creative Commons Attribution, Non-Commercial, No Derivatives License.

NCBI Organism Classification: Notophthalmus viridescens Cell Type: oocyte Cellular Component: nucleolar chromatin

Cite this page: Hill, M.A. (2024, June 20) Embryology Amphibian oocyte transcription.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Amphibian_oocyte_transcription.jpg

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Yi efo/eka'e gwa ebo wo le nyangagi wuncin ye kamina wunga tinya nan

	Gwalagizhi	Nyangagi	Dimensions	User	Comment
current	07:22, 26 April 2011		1,200 × 841 (475 KB)	S8600021 (talk \| contribs)	==Amphibian oocyte transcription== Figure 144 from Chapter 4 (Nucleus) of 'The Cell' by Don W. Fawcett M.D. Amphibian oocyte nuclei contain numerous extra-chromosomal nuclei, each of which contains a tandem array of genes encoding ribosomal RNA. Here,

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 ==Amphibian oocyte transcription==
-Amphibian oocyte nuclei contain numerous extra-chromosomal nuclei, each of which contains a tandem array of genes encoding ribosomal RNA. Active transcription is seen by the tree-like structures in which each branch represents a growing transcript. Untranscribed spacer DNA is seen between each transcript.
+Amphibian {{oocyte}} nuclei contain numerous extra-chromosomal nuclei, each of which contains a tandem array of genes encoding ribosomal RNA. Active transcription is seen by the tree-like structures in which each branch represents a growing transcript. Untranscribed spacer DNA is seen between each transcript.
-Methods developed by O.L. Miller Jr. and colleagues, the extrachromosomal nuclei from a newt oocyte have been dispersed in low salt, and centrifuged through a sucrose cushion containing formaldehyde on to a carbon coated grid.
+Methods developed by O.L. Miller Jr. and colleagues, the extra-chromosomal nuclei from a newt oocyte have been dispersed in low salt, and centrifuged through a sucrose cushion containing formaldehyde on to a carbon coated grid.
 :'''Links:''' [[Molecular Development - Ribonucleic acid]]
@@ Line 18: / Line 19: @@
 Licensing: Attribution Non-Commercial; No Derivatives:This image is licensed under a [http://creativecommons.org/licenses/by-nc-nd/3.0/ Creative Commons Attribution], Non-Commercial, No Derivatives License.
-NCBI Organism Classification: Notophthalmus viridescens
+NCBI Organism Classification: Notophthalmus viridescens  Cell Type: oocyte Cellular Component: nucleolar chromatin
-Cell Type: oocyte
-Cellular Component: nucleolar chromatin
+{{Footer}}
 [[Category:Genetics]] [[Category:Oocyte]] [[Category:Molecular]]  [[Category:Electron Micrograph]]