Navigation Links
Cytoplasm affects the number of vertebrae in carp-goldfish clones

The March 2005 issue of Biology of Reproduction contains a report of some intriguing findings in cloned offspring created when nuclei from one genus of fish were transplanted to enucleated eggs of another genus of fish.

The seven offspring, cloned from nuclei of common carp and egg cytoplasm of goldfish, were virtually identical to the nuclear donor species, Cyprinus carpio, in appearance and in most physical traits. The number of vertebrae in the clones, however, was in the range of the recipient species, Carassius auratus.


Yong-Hua Sun, Shang-Ping Chen, Ya-Ping Wang, Wei Hu, and Zuo-Yan Zhu, who conducted this work at the Institute of Hydrobiology, Chinese Academy of Sciences, in Wuhan, China, conclude that the egg cytoplasm, and not the genetic code of the transplanted nucleus, influenced this aspect of the skeleton as the cloned fish developed.

They speculate that a so-called "segmentation clock" early in embryonic development is controlled by the egg cytoplasm. Thus the egg cytoplasm of the recipient goldfish directs segmentation of the body and hence the number of vertebrae.

Common carp have 33 to 36 vertebrae in their backbones, while goldfish have 26 to 28. Six of the seven cloned fish had between 26 and 28 vertebrae; one had 31.

Although the initial rate of success in producing carp-goldfish clones is low--seven offspring in 501 attempts in this study--the authors believe that cross-species transplantation will lead to improved understanding of the contributions of the nucleus and egg cytoplasm to the growth and development of vertebrates.


'"/>

Source:Society for the Study of Reproduction


Page: 1

Related biology news :

1. Clam embryo study shows pollutant mixture adversely affects nerve cell development
2. Road salt affects mitigation wetlands
3. Exercise training in ordinary people affects the activity of 500 genes
4. Enzyme affects hypertension by controlling salt levels in body
5. Tropical Deforestation affects rainfall in the U.S. and around the globe
6. New study examines how sense of smell affects mating and aggression in mice
7. Gene variation affects tamoxifens benefit for breast cancer
8. New discovery: Molecular variation in one gene affects the growth of natural populations
9. UMaine teams with fishermen to study affects of trawling on seafloor ecology
10. Memory loss affects more of the brain than previously thought
11. Chemotherapy temporarily affects the structures of the human brain
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/31/2016)... 31, 2016   ... the "Company") LegacyXChange is excited to release ... soon to be launched online site for trading 100% ... ) will also provide potential shareholders a sense of ... to an industry that is notorious for fraud. The ...
(Date:3/22/2016)... Ontario , PROVO and ... Newborn Screening Ontario (NSO), which operates the ... for molecular testing, and Tute Genomics and UNIConnect, ... management technology respectively, today announced the launch of a ... next-generation sequencing (NGS) testing panel. NSO ...
(Date:3/15/2016)... JERUSALEM , March 15, 2016 ... Jerusalem , the technology-transfer company of the Hebrew University, ... developer of remote sensing technology of various human biological ... funding, raising $2.0 million from private investors. ... technology, based on the detection of electromagnetic emissions from ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... May 4, 2016  Bayer today announced that ... Stivarga ® (regorafenib) tablets for the treatment ... met its primary endpoint of a statistically significant ... evaluated the efficacy and safety of regorafenib in ... treatment with sorafenib. The safety and tolerability were ...
(Date:5/4/2016)... May 4, 2016 According to ... "Metabolomics Market - Global Industry Analysis, Size, Share, Growth, ... is anticipated to expand at a CAGR of 17.1% ... by 2024. Metabolomics is the extensive study ... biofluids, tissues or organisms. Together, these small molecules and ...
(Date:5/4/2016)... ... May 04, 2016 , ... Nutrafol®, a ... help treat hormonal and stress related hair loss. With patent-pending formulas for both ... key opinion leaders in the medical and salon channels nationwide. , Dermatologists, ...
(Date:5/3/2016)... ... May 03, 2016 , ... Morf ... and compliance training platform on mobile devices, today released a new interactive ... for Medical Devices. The course is essential for owners or operators of places ...
Breaking Biology Technology: