Sheep Development: Difference between revisions
(→Dolly) |
|||
Line 15: | Line 15: | ||
* '''Viral particles of endogenous betaretroviruses are released in the sheep uterus and infect the conceptus trophectoderm in a transspecies embryo transfer model'''<ref name="PMID20610723"><pubmed>20610723</pubmed></ref> | * '''Viral particles of endogenous betaretroviruses are released in the sheep uterus and infect the conceptus trophectoderm in a transspecies embryo transfer model'''<ref name="PMID20610723"><pubmed>20610723</pubmed></ref> | ||
|} | |} | ||
==Development Overview== | |||
* '''day 4''' - embryo enters the uterus at the morula stage of development | |||
* '''day 6''' - develops into a blastocyst | |||
* '''day 8''' - blastocyst hatches from zona pellucida | |||
* '''day 11-16''' - elongates to a filamentous form | |||
* '''day 14 - 16''' - binucleate cells begin to differentiate in the trophoblast | |||
* '''day 16''' - adplantation | |||
See also Implantation mechanisms: insights from the sheep<ref><pubmed>15579583</pubmed></ref> | |||
==Dolly== | ==Dolly== |
Revision as of 13:25, 12 October 2010
Introduction
Domestic sheep (Ovis aries)
- term gestational days = 145 days
Some Recent Findings
|
Development Overview
- day 4 - embryo enters the uterus at the morula stage of development
- day 6 - develops into a blastocyst
- day 8 - blastocyst hatches from zona pellucida
- day 11-16 - elongates to a filamentous form
- day 14 - 16 - binucleate cells begin to differentiate in the trophoblast
- day 16 - adplantation
See also Implantation mechanisms: insights from the sheep[3]
Dolly
A female domestic sheep remarkable in being the first mammal to be cloned from an adult somatic cell, using the process of nuclear transfer.[4]
Cloned by Ian Wilmut, Keith Campbell and colleagues at the Roslin Institute near Edinburgh in Scotland, born on 5 July 1996 and she lived until the age of six (5 July 1996 – 14 February 2003). The cell used as the donor for the cloning of Dolly was taken from a mammary gland, and the production of a healthy clone therefore proved that a cell taken from a specific part of the body could recreate a whole individual. As Dolly was cloned from part of a mammary gland, she was named after the famously curvaceous country western singer Dolly Parton.
References
Reviews
<pubmed>19726075</pubmed> <pubmed>16008756</pubmed>
Articles
<pubmed>19909921</pubmed> <pubmed>15047940</pubmed>| Reproduction
Search PubMed
Search Pubmed: sheep development | ovine development | ovine embryo development
External Links
Animal Development: axolotl | bat | cat | chicken | cow | dog | dolphin | echidna | fly | frog | goat | grasshopper | guinea pig | hamster | horse | kangaroo | koala | lizard | medaka | mouse | opossum | pig | platypus | rabbit | rat | salamander | sea squirt | sea urchin | sheep | worm | zebrafish | life cycles | development timetable | development models | K12 |
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, April 24) Embryology Sheep Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Sheep_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G