Kangaroo Development: Difference between revisions
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* '''Desert hedgehog is a mammal-specific gene expressed during testicular and ovarian development in a marsupial'''.<ref><pubmed>22132805 </pubmed></ref> "These data suggest that there is a highly conserved role for DHH signalling in the differentiation and function of the mammalian testis and that DHH may be necessary for marsupial ovarian development. The receptors PTCH1 and PTCH2 are highly conserved mediators of hedgehog signalling in both the developing and adult marsupial gonads. Together these findings indicate DHH is an essential therian mammal-specific morphogen in gonadal development and gametogenesis." | |||
* '''Developmental origins of precocial forelimbs in marsupial neonates'''<ref><pubmed>21854559</pubmed>[http://genomebiology.com/2011/12/8/R81/abstract Genome Biol.]</ref> "We present the genome sequence of the tammar wallaby, Macropus eugenii, which is a member of the kangaroo family and the first representative of the iconic hopping mammals that symbolize Australia to be sequenced. The tammar has many unusual biological characteristics, including the longest period of embryonic diapause of any mammal, extremely synchronized seasonal breeding and prolonged and sophisticated lactation within a well-defined pouch. Like other marsupials, it gives birth to highly altricial young, and has a small number of very large chromosomes, making it a valuable model for genomics, reproduction and development. The genome has been sequenced to 2x coverage using Sanger sequencing, enhanced with additional next generation sequencing and the integration of extensive physical and linkage maps to build the genome assembly. We also sequenced the tammar transcriptome across many tissues and developmental time points. Our analyses of these data shed light on mammalian reproduction, development and genome evolution: there is innovation in reproductive and lactational genes, rapid evolution of germ cell genes, and incomplete, locus-specific X inactivation. We also observe novel retrotransposons and a highly rearranged major histocompatibility complex, with many class I genes located outside the complex. Novel microRNAs in the tammar HOX clusters uncover new potential mammalian HOX regulatory elements." | * '''Developmental origins of precocial forelimbs in marsupial neonates'''<ref><pubmed>21854559</pubmed>[http://genomebiology.com/2011/12/8/R81/abstract Genome Biol.]</ref> "We present the genome sequence of the tammar wallaby, Macropus eugenii, which is a member of the kangaroo family and the first representative of the iconic hopping mammals that symbolize Australia to be sequenced. The tammar has many unusual biological characteristics, including the longest period of embryonic diapause of any mammal, extremely synchronized seasonal breeding and prolonged and sophisticated lactation within a well-defined pouch. Like other marsupials, it gives birth to highly altricial young, and has a small number of very large chromosomes, making it a valuable model for genomics, reproduction and development. The genome has been sequenced to 2x coverage using Sanger sequencing, enhanced with additional next generation sequencing and the integration of extensive physical and linkage maps to build the genome assembly. We also sequenced the tammar transcriptome across many tissues and developmental time points. Our analyses of these data shed light on mammalian reproduction, development and genome evolution: there is innovation in reproductive and lactational genes, rapid evolution of germ cell genes, and incomplete, locus-specific X inactivation. We also observe novel retrotransposons and a highly rearranged major histocompatibility complex, with many class I genes located outside the complex. Novel microRNAs in the tammar HOX clusters uncover new potential mammalian HOX regulatory elements." | ||
Revision as of 18:07, 17 January 2012
Introduction
Some Recent Findings
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Taxon
Taxonomy ID: 9322
Genbank common name: kangaroo
Inherited blast name: marsupials
Rank: species
Genetic code: Translation table 1 (Standard)
Mitochondrial genetic code: Translation table 2 (Vertebrate Mitochondrial)
Lineage ( full )
cellular organisms; Eukaryota; Opisthokonta; Metazoa; Eumetazoa; Bilateria; Coelomata; Deuterostomia; Chordata; Craniata; Vertebrata; Gnathostomata; Teleostomi; Euteleostomi; Sarcopterygii; Tetrapoda; Amniota; Mammalia; Theria; Metatheria; Diprotodontia; Macropodidae; Macropus
- Links: Taxonomy Browser Macropus
Development Overview
Genome
The tammar wallaby karyotype (2 n = 16) consists of 7 autosomes and the two sex chromosomes.[3]
References
- ↑ <pubmed>22132805 </pubmed>
- ↑ <pubmed>21854559</pubmed>Genome Biol.
- ↑ <pubmed>17822525</pubmed>| BMC Evol Biol.
Reviews
<pubmed>18805821</pubmed>
Articles
<pubmed>21672208</pubmed> <pubmed>21540568</pubmed> <pubmed>18431054</pubmed> <pubmed>18322362</pubmed> <pubmed>18069991</pubmed>
Books
- Life of Marsupials by Hugh Tyndale-Biscoe Publisher: CSIRO Publishing (2005).
- Kangaroo - A Portrait of an Extraordinary Marsupial by Stephen Jackson and Karl Vernes Publisher: Allen & Unwin (2010).
Search PubMed
Search PubMed: Kangaroo development | Macropus eugenii | marsupial development
External Links
External Links Notice - The dynamic nature of the internet may mean that some of these listed links may no longer function. If the link no longer works search the web with the link text or name. Links to any external commercial sites are provided for information purposes only and should never be considered an endorsement. UNSW Embryology is provided as an educational resource with no clinical information or commercial affiliation.
- NSW Government Information
- Newborn Baby Grey Kangaroo - Attenborough - Life of Mammals - BBC video
- Birth of the Red Kangaroo (1965) - CSIRO video 1 | video 2 video 3
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 Kangaroo Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Kangaroo_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G