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

born after wars, it may also cause more boys to be born each year.

How does the gene work?

The trees (below) illustrate how the gene works. It is a simplified example, in which men either have only sons, only daughters, or equal numbers of each, though in reality it is less clear cut. It shows that although the gene has no effect in females, they also carry the gene and pass it to their children.

In the first family tree (A) the grandfather is mm, so all his children are male. He only passes on the m allele, so his children are more likely to have the mm combination of alleles themselves. As a result, those sons may also have only sons (as shown). The grandsons have the mf combination of alleles, because they inherited an m from their father and an f from their mother. As a result, they have an equal number of sons and daughters (the great grandchildren).

In the second tree (B) the grandfather is ff, so all his children are female, they have the ff combination of alleles because their father and mother were both ff. One of the female children has her own children with a male who has the mm combination of alleles. That male determines the sex of the children, so the grandchildren are all male. The grandsons have the mf combination of alleles, because they inherited an m from their father and f from their mother. As a result, they have an equal number of sons and daughters (the great-grandchildren).

http://www.ncl.ac.uk/press.office/press.release/photos/516diagram_06.1.jpg


'/>"/>

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:8/19/2014)... and tuberculosis live side-by-side. Worldwide there are approximately ... nearly all of them occurring where tuberculosis is ... or BCG, provides only partial protection against both ... is needed to combat both diseases. UCLA-led research ... diseases., In a study published in the September ...
(Date:8/19/2014)... CAMBRIDGE, MA -- MIT chemical engineers have devised a ... that are released slowly over a few weeks. When ... induces the body to rapidly form new bone that ... This type of coated scaffold could offer a dramatic ... which involves transplanting bone from another part of the ...
(Date:8/19/2014)... with neonatal abstinence syndrome (NAS) secondary to in-utero ... through withdrawal than others, but the underlying reasons ... (when genes are turned on or off) changes ... at Boston University School of Medicine (BUSM) and ... its kind study to identify some of these ...
Breaking Biology News(10 mins):New vaccine shows promise as stronger weapon against both tuberculosis and leprosy 2Engineering new bone growth 2Engineering new bone growth 3In-utero methadone, Subutex exposure could alter gene expression, cause severe Neonatal Abstience Syndrome 2
... may help to identify which depressed patients will ... signal, detectable by noninvasive imaging, also holds clues ... for drug development, say National Institutes of Health ... of several such markers, including factors detectable in ...
... pollution and heavy fishingare adding insult to injury in ... by the Wildlife Conservation Society and the University of ... found that pollution and overfishing on reef systems have ... wormsthat further degrade corals, a discovery that underlines the ...
... University of Oklahoma research team has been awarded a five-year, ... that can lead to a greater understanding of human diseases ... infections. The goal of the NIH grant is to ... research in Oklahoma. "This is the first NIH ...
Cached Biology News:Brain signal IDs responders to fast-acting antidepressant 2Brain signal IDs responders to fast-acting antidepressant 3Brain signal IDs responders to fast-acting antidepressant 4Brain signal IDs responders to fast-acting antidepressant 5Brain signal IDs responders to fast-acting antidepressant 6Microbes, sponges, and worms add to coral reef woes 2Microbes, sponges, and worms add to coral reef woes 3OU research group awarded $9.7 million NIH CoBRE grant in structural biology 2
(Date:8/19/2014)... Research and Markets  has announced the addition of the ... Report" report to their offering. This ... (SOFCs) in US$ Thousands. The report provides separate comprehensive analytics ... Europe , Asia-Pacific , and Rest ... period 2012 through 2020. Market data and analytics are derived ...
(Date:8/19/2014)... 19, 2014 In November 2012, the European ... Evaluation Report (PBRER) in a new PSUR – responding to ... benefit-risk profile of a drug. Adopted in many regions, the ... Present a comprehensive and critical analysis of new or ... Highlight any new evidence of the potential benefits of ...
(Date:8/18/2014)... A new therapy developed by researchers at the ... Medicine and Columbia University Medical Center (CUMC) may ... disease treatment. , The researchers demonstrated in ... could selectively inhibit blood vessel re-narrowing and simultaneously ... a balloon catheter to open narrowed or blocked ...
(Date:8/18/2014)... Global HIV Infection Drug Market and Pipeline Insight ... of HIV infection and the number of deaths due to ... rate across the globe. It has been estimated that the ... in 2013, with the rates for children being even much ... infection rates has been the improved access to antiretroviral drugs ...
Breaking Biology Technology:Global Solid Oxide Fuel Cells (SOFCs) - Strategic Business Report 2014 2Top Five Best Practices for Developing Your Periodic Benefit Risk Evaluation Report (PBRER), New Webinar Hosted by Xtalks 2Selective therapy may improve artery repair after interventional cardiovascular procedures 2Selective therapy may improve artery repair after interventional cardiovascular procedures 3Global HIV Infection Drug Market Overview 2Global HIV Infection Drug Market Overview 3Global HIV Infection Drug Market Overview 4
... Hospitals in Western Pennsylvania Earn Designation, PITTSBURGH, ... named Allegheny General Hospital, UPMC Presbyterian Shadyside and ... Rare Cancers., Complex and rare cancers comprise ... making it difficult for patients to locate or,research ...
... has announced,development of a chemically synthesized vaccine specific ... patented Replikins(TM) technology.,When the vaccine was administered orally ... Taura virus. The specificity of the protective,effect was ... active,regions in the vaccine, and as a result ...
... Prescribing of Copaxone over an Interferon-Beta Therapy, According to a ... ... Resources, WALTHAM, Mass., March 11 Decision Resources, one ... issues, finds that Teva Pharmaceutical,s Copaxone has the,greatest patient share among ...
Cached Biology Technology:Highmark Blue Cross Blue Shield and National Association Name Area Hospitals as Blue Distinction Centers for Complex and Rare Cancers 2Highmark Blue Cross Blue Shield and National Association Name Area Hospitals as Blue Distinction Centers for Complex and Rare Cancers 3Replikins Oral Vaccine Synthesized in 7 Days Protects 91% of Shrimp Against a Lethal Virus 2Teva Pharmaceutical's Altered Peptide Ligand Copaxone Boasts the Greatest Patient Share Among First- and Second-Line Therapies for the Treatment of Multiple Sclerosis 2Teva Pharmaceutical's Altered Peptide Ligand Copaxone Boasts the Greatest Patient Share Among First- and Second-Line Therapies for the Treatment of Multiple Sclerosis 3
Designed for use with all 96-well SPRI reagent kits. Used with round bottom 96-well microplates, and 96-well thermal cycling plates....
... Polystyrene covers can be ... Ridged covers for stacking ... Non-ridged covers for use with ... covers, ridged and non-ridged, are ...
... can be used with all ... for stacking of covered plates ... use with automated systems ... non-ridged, are available for use ...
... made from an inert polymer with a unique ... 384 split septum caps for use with 384-well ... PCR when used in conjunction with screw or ... standard pipetting equipment 384 septum caps may ...
Biology Products: