HOME >> BIOLOGY >> NEWS
Plants defy Mendel's inheritance laws, may prompt textbook changes

tant Arabidopsis, which has two copies of the altered gene, let it seed and then plant the seeds, 90 percent of the offspring will look like the parent, but 10 percent will look like the normal grandparents," Pruitt said. "Our genetic training tells us that's just not possible. This challenges everything we believe.

"We've done a lot of experiments, described in this paper, that show none of the simple explanations account for this skipping of generations by an inherited trait."

The scientists kept the plants in isolation so they couldn't accidentally crossbreed with plants that didn't have the mutated gene, called hothead, that causes organ fusion like that seen in the flowers. The researchers used molecular markers - bits of DNA that help identify and locate genes in organisms - to determine whether a plant carried normal or mutant copies of the genes.

"It seems that these hothead-containing plants keep a cryptic copy of everything that was in the previous generation, even though it doesn't show up in the DNA, it's not in the chromosome," Pruitt said. "Some other type of gene sequence information that we don't really understand yet is modifying the inherited traits."

Although the hothead gene tipped the researchers off to this unconventional inheritance cycle, Pruitt believes that this particular DNA sequence is just a trigger for the phenomenon. He suspects that a number of other genes and the proteins they produce are involved in activating this process.

"We need to understand more about the molecular mechanics of how this process works," Pruitt said. "Then we will know exactly what role this gene plays."

Pruitt's team already knows that animals don't have hothead genes, either normal or mutated, so the scientists must investigate which genes might affect this novel inheritance in both plants and animals.

"There are probably a lot of other triggers yet to be discovered, and this mechanism for inheritance ma
'"/>

Contact: Susan A. Steeves
ssteeves@purdue.edu
765-496-7481
Purdue University
22-Mar-2005


Page: 1 2 3

Related biology news :

1. Plants recognize their siblings, biologists discover
2. Plants that produce more vitamin C may result from UCLA-Dartmouth discovery
3. Plants tag insect herbivores with an alarm
4. Plants with male and bisexual flowers on the same plant are better mothers
5. Plants do not emit methane
6. Plants management of nutrient suggests environmental remedies
7. Plants point the way to coping with climate change
8. Plants, plasmids and possibilities -- Methods permit functional gene studies in plants
9. Plants give up answers in the war on bacteria
10. Plants tell caterpillars when its safe to forage
11. Plants role in global warming re-examined in ORNL Science paper

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... Allen Institute for Cell Science today announces the launch ... dynamic digital window into the human cell. The website ... deep learning to create predictive models of cell organization, ... suite of powerful tools. The Allen Cell Explorer will ... resources created and shared by the Allen Institute for ...
(Date:3/30/2017)... 30, 2017  On April 6-7, 2017, Sequencing.com will ... hackathon at Microsoft,s headquarters in ... focus on developing health and wellness apps that provide ... the Genome is the first hackathon for personal ... largest companies in the genomics, tech and health industries ...
(Date:3/27/2017)... N.Y. , March 27, 2017  Catholic ... Information and Management Systems Society (HIMSS) Analytics for ... EMR Adoption Model sm . In addition, CHS ... of U.S. hospitals using an electronic medical record ... for its high level of EMR usage in ...
Breaking Biology News(10 mins):
(Date:7/17/2017)... ... 17, 2017 , ... Panitch Schwarze Belisario & Nadel ... BiG (Biomedical Innovation Group) annual meeting in China. , This year’s meeting, held ... T-cell) therapy, a rapidly developing highly personalized anti-cancer technology that involves removing some ...
(Date:7/16/2017)... ... July 16, 2017 , ... ... analytical instruments announced the launch of its new line of Rocking and Waving ... and waving shaker models (both analog and digital) for laboratory applications in a ...
(Date:7/14/2017)... , ... July 14, 2017 , ... ... EMS company . Sonic Manufacturing Technologies has installed a solar system on its ... a three-year period,” the President of Sonic, Kenneth Raab stated. The company’s proud ...
(Date:7/14/2017)... Liege, Belgium/ Denville, USA/ Martinsried, Germany (PRWEB) , ... ... ... today announced a newly developed standardized solution for sample preparation of proteins to ... Kit) and the Diagenode Bioruptor® sonication system. , The PreOmics iST Kit ...
Breaking Biology Technology:
Cached News: