HOME >> BIOLOGY >> NEWS
Divergent mating systems and parental conflict as a barrier to hybridization in flowering plants

Sexual reproduction can be thought of as a cooperative process in which two individuals come together to produce a new individual. It can also be viewed as a process in which two parties with differing interests, investment, and background interact to produce a new individual. From the former perspective, parental interests are unified (both wish to produce vigorous offspring), while the latter suggests possible conflict. This conflict can occur before or after fertilization. Before fertilization, the mother has an interest in picking the best suited father from a larger pool, while all fathers have an interest in being picked. After fertilization, fathers have an interest in maximizing maternal investment in their progeny, while mothers will have an interest in carefully partitioning resources among progeny to maximize their combined success.

A new study in the September issue of The American Naturalist argues that with increased self-fertilization, parental conflict decreases. Consequently, parents from frequently selfing groups should be competitively inferior with respect to this parental conflict. Yaniv Brandvain and David Haig examine crosses between selfing and outcrossing pairs and find that, in most cases, there are pre- and post-zygotic symptoms of outcrossers being "stronger" than selfers with regard to parental conflict. They contend that this competitive imbalance can explain a common pattern of unilateral incompatibility, in which pollen from self-incompatible populations can successfully fertilize ovules of self-compatible individuals, but the reciprocal cross fails. Since both pre- and post-zygotic consequences of this imbalanced conflict can perturb successful fertilization and development, they provide barriers to hybridization and may facilitate speciation.


'"/>

Contact: Carrie Olivia Adams
coa@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
2-Aug-2005


Page: 1

Related biology news :

1. Divergent life history shapes gene expression in brains of salmon
2. Common fungicide causes long-term changes in mating behavior
3. Microfluidic chip helps solve cellular mating puzzle
4. Male chimpanzees prefer mating with old females
5. New research reveals unexpected post-mating gene expression in model lab insect
6. New study examines how sense of smell affects mating and aggression in mice
7. Study in Royal Society journal on link between creativity and mating success
8. Sperm trading can resolve hermaphrodite mating conflicts
9. Same-sex mating by fungi spawned infection outbreak, evidence suggests
10. Weapon performance determines mating success in the collared lizard
11. New study explores the evolution of male parental care and female multiple mating

Post Your Comments:
(Date:7/25/2014)... a pleiotropic factor characterized by the existence of ... that confer to the protein deeply different characteristics. ... myelination occurring during development and the different phases ... degeneration, axon regrowth, remyelination and target reinnervation, Researchers ... that the soluble NRG1 upregulation observed in Schwann ...
(Date:7/25/2014)... of a molecular testing panel developed at UPMC ... initial surgery for patients with thyroid nodules and ... Cancer Institute (UPCI), partner with UPMC CancerCenter., The ... and other diagnostic testing agencies, improved the chances ... 30 percent, according to the study published this ...
(Date:7/24/2014)... -- Keryx Biopharmaceuticals, Inc. (Nasdaq:KERX) (the "Company") announced the ... Phase 3 study of Zerenex (ferric citrate), the Company,s ... of hyperphosphatemia in patients with end-stage renal disease (ESRD) ... delivery with FErric CiTrate in EsrD) was published online ... of Nephrology ( JASN ). , ...
Breaking Biology News(10 mins):Test increases odds of correct surgery for thyroid cancer patients 2Test increases odds of correct surgery for thyroid cancer patients 3Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 2Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 3Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 4
(Date:7/24/2014)... MENLO PARK, Calif. , July 24, 2014 ... biotechnology company in the emerging field of regenerative ... live webcast of a presentation to investors on ... 1:30 p.m. PDT.  The presentation will include an ... pipeline. To access the webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics ...
(Date:7/24/2014)... Yet, scientists are making progress in devising suitable ... approach relies on quantum dotsa kind of artificial ... A new study demonstrates that changing the coupling ... electrical impulses can help better control them. This ... as quantum information units, which would produce faster ...
(Date:7/24/2014)... 24, 2014 Research and Markets ... and Proteomics Analytical Instruments Market 2014-2018" report to ... Genomics is the study of the gene ... the structure and functions of proteomes or sets of ... technology. Genomics involves the mapping of genes and DNA ...
(Date:7/24/2014)... Three companies from the angelMD network were ... Competition. Out of 700 competition entrants, Chiron Health, Litesprite, ... round. In this round twenty teams are invited to ... mentoring from thought-leaders and medical entrepreneurs from all over ... commitment to the Livestrong vision around the Big C ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 23 angelMD Startups Make Livestrong Big C Semi-finals 2
Cached News: