Navigation Links
Boy or girl? It's in the father's genes
Date:12/11/2008

sperm and have more sons.
  • The second, known as mf, produce a roughly equal number of X and Y sperm and have an approximately equal number of sons and daughters.
  • The third, known as ff produce more X sperm and have more daughters.
  • "The gene that is passed on from both parents, which causes some men to have more sons and some to have more daughters, may explain why we see the number of men and women roughly balanced in a population. If there are too many males in the population, for example, females will more easily find a mate, so men who have more daughters will pass on more of their genes, causing more females to be born in later generations," says Newcastle University researcher Mr Gellatly.

    More boys born after the wars

    In many of the countries that fought in the World Wars, there was a sudden increase in the number of boys born afterwards. The year after World War I ended, an extra two boys were born for every 100 girls in the UK, compared to the year before the war started. The gene, which Mr Gellatly has described in his research, could explain why this happened.

    As the odds were in favour of men with more sons seeing a son return from the war, those sons were more likely to father boys themselves because they inherited that tendency from their fathers. In contrast, men with more daughters may have lost their only sons in the war and those sons would have been more likely to father girls. This would explain why the men that survived the war were more likely to have male children, which resulted in the boy-baby boom.

    In most countries, for as long as records have been kept, more boys than girls have been born. In the UK and US, for example, there are currently about 105 males born for every 100 females.

    It is well-documented that more males die in childhood and before they are old enough to have children. So in the same way that the gene may cause more boys to be
    '/>"/>

    Contact: Karen Bidewell
    karen.bidewell@ncl.ac.uk
    44-019-122-27850
    Newcastle University
    Source:Eurekalert

    Page: 1 2 3

    Related biology news :

    1. New genes present drug targets for managing cholesterol and glucose levels
    2. Genes for 9 health indicators
    3. Genes determine whether sugar pills work
    4. Einstein researchers develop technique to count messages made by single genes
    5. Bipolar disorder genes, pathways identified by Indiana University neuroscientists
    6. From genes to farmers fields
    7. Researchers at IRB Barcelona produce more data on key genes in diabetes
    8. Human genes sing different tunes in different tissues
    9. NJIT professor finds engineering technique to identify disease-causing genes
    10. Mapping a clan of mobile selfish genes
    11. Genes that control cell death fingered in age-related hearing loss
    Post Your Comments:
    *Name:
    *Comment:
    *Email:
    (Date:7/11/2014)... animals often develop relationships with other group members to ... wild chacma baboons the strategy for grooming activities shows ... just published in the scientific journal Biology Letters ... baboons is not practiced without ulterior motives. To be ... the individual, while grooming another individual can provide access ...
    (Date:7/11/2014)... University, Sweden, have explored two different ways that ... leading to the formation of oxygen molecules in ... the scientific journal Nature Communications . , ... synthetic catalysts for water oxidation, which are key ... direct storage of solar energy in fuels like ...
    (Date:7/11/2014)... 2014 The increased risk of kidney injury related ... fluids reflects the mass of HES molecules, according to ... journal of the International Anesthesia Research Society (IARS). , ... effect of HES on cultured human renal proximal tubule ... Wunder and colleagues of University Hospital Wrzburg, Austria. ...
    Breaking Biology News(10 mins):Baboons groom early in the day to get benefits later 2Molecular snapshots of oxygen formation in photosynthesis 2In lab studies, hydroxyethyl starch has direct harmful effects on kidney cells 2
    ... mantra of our health-conscious times and is seen as an ... much salt in the diet and specifically sodium ... blood pressure however, scientists have found that salt,s other oft-overlooked ... study by researchers at the University of Glasgow has revealed ...
    ... for Translational Medicine and Therapeutics, 7th Annual International ... the Science of Scale, to be held in ... to translational science. ITMAT is part of the ... Pennsylvania. , Speakers will include those dealing with ...
    ... of the Boston Police Department, will ... IEEE International Conference on Technologies for Homeland Security (HST ,13) ... the aftermath of the tragic events of 15 April 2013 ... that ultimately led to the capture of one of the ...
    Cached Biology News:Yin-yang effect of sodium and chloride presents salt conundrum 2Lab-on-a-chip tech, brain mapping & microbiome highlighted at translational med meeting 2Boston Police Chief to Address Boston Marathon Bombings at IEEE Homeland Security Conference in Waltham, Mass., on 12 November 2
    (Date:7/11/2014)... , July 11, 2014  Researchers have pioneered ... images. The new technology, called Virtual Finger, allows ... structures like neurons and synapses using the flat ... technology makes 3D imaging studies orders of magnitude ... an unprecedented level across many areas of experimental ...
    (Date:7/10/2014)... July 10, 2014 Product and ... very low abundance and are often “lost in ... time-consuming. , Join presenters Dr. Rowel Tobias, Senior ... John Anders, Head of Quality at Nanotherapeutics, Inc., ... that can speed detection and quantitation while achieving ...
    (Date:7/10/2014)... Mass. (PRWEB) July 10, 2014 Terascala, ... today announced that Alan Swahn, a former vice president ... executive team as vice president of marketing. Terascala’s software ... Dell and NetApp create the highest performance and most ... been appointed to guide Terascala’s channel expansion and broaden ...
    (Date:7/10/2014)... OMICS Group’s 5th International conference and exhibition ... at Double Tree by Hilton Beijing, China is all ... & Bioanalytical research methods only to facilitate improved living ... Dr. Srinubabu Gedela, MD of OMICS Group Inc has ... one in bringing a unique and international mix of ...
    Breaking Biology Technology:Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2Terascala Expands Executive Team 2Terascala Expands Executive Team 3A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4
    ... , ,ROCHESTER, Wis. Runzheimer International ... the formation of an exclusive partnership between the ... travel managers within the Concur Expense solution. , ... in travel programs, policy and cost benchmarking information, ...
    ... about more than the one that got away , ... fish were MILWAUKEE The Medical College of Wisconsin ... its research. It reached an important milestone July 1, when ... marketing and licensing for MCW's Research Foundation . , ...
    ... Terrace ,Source: UW Communications MADISON - With the University ... the verge of creating two separate statewide networks, Gov. ... combine their efforts. , ,"It's more sensible for taxpayers ... said Doyle spokesperson Dan Leistikow. , ,Initial discussions last ...
    Cached Biology Technology:Runzheimer and Concur develop travel management service 2Interview with Medical College of Wisconsin Research Foundation's new director of marketing and licensing 2Interview with Medical College of Wisconsin Research Foundation's new director of marketing and licensing 3Governor tells state, university to work together on IT 2
    Microlite 1+ 1x12 Strip assembled, flat bottom; the ideal vessel for low signal luminescent reactions, offering medium binding with enhanced dynamic range, extra high reflectivity and minimal cross t...
    Immulon 4 HBX 1x12 Strip, flat bottom; high binding extra surface with special resin and irradiation, offers maximum protein uptake....
    ... 0-10 psi precision pressure regulator and pressurized syringe ... Faster liquid-switching Steady flow rate Microinjecting ... Can be added to any new ... any third-party manufacturer, even homemade. Connect to house ...
    ...
    Biology Products: