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:11/4/2014)... (Nov. 4, 2014) – A majority of Madagascar,s 101 ... could have serious consequences for the rainforests they call ... the positive impacts lemurs can have on rainforest tree ... disappearance could have on the region,s rich biodiversity. , ... fruits eaten by lemurs. Lemurs in turn disperse ...
(Date:11/3/2014)... of Colorado Cancer Center study published in ... Sciences describes the activity of a recently discovered ... or IL-37. It has been known to limit inflammation ... adaptive immune system: IL-37 inhibits the ability of the ... "Knowing this mechanism that underlies IL-37,s effect on the ...
(Date:11/2/2014)... issue of Physics World , James Dacey explores ... of death" to take their innovations from the lab ... gruelling challenge facing all start-up companies as they move ... because of two main factors: physics-based inventions are usually ... turn out to be a lot more complicated than ...
Breaking Biology News(10 mins):Gardeners of Madagascar rainforest at risk 2Gardeners of Madagascar rainforest at risk 3PNAS: From HIV to cancer, IL-37 regulates immune system 2The 'valley of death' facing physics start-ups 2
... thought that gene expression was modulated only by transcription factors. ... be regulated by the RISC complex (siRNA-mediated degradation via Dicer). ... is even more complex than we first imaginated... , ... for using a weapon or tool is finding it. And ...
... form of skin cancer, can be successfully treated in some ... work and why they are only effective in some patients ... articles in the January 17 issue of the Journal of ... of immune cells called killer T cells that can attack ...
... study, investigators in Japan found no association between a ... blood pressure, as reported in the March 1 issue ... , The researchers reported that they were not able ... the Kaposi's sarcoma virus, in the lungs of 22 ...
Cached Biology News:FDA Approves Human Hookworm Vaccine for Phase I Safety Trials 2FDA Approves Human Hookworm Vaccine for Phase I Safety Trials 3Association of herpesvirus with lung disorder questioned 2
(Date:11/26/2014)... 26, 2014 The Alliance for ... survey of European physicians at the "1 ST ... Biological Therapies" at the Spanish Ministry of Health, ... EuropaBio and the Spanish Bioindustry Association (ASEBIO), included ... from Spanish oncology and rheumatology societies, representatives from ...
(Date:11/26/2014)... SonaCare Medical, a leading manufacturer of ... participated in the American Urology Association’s (AUA) surgical ... opinion leaders in urology presented on the latest ... masses while attendees had the opportunity to evaluate ... labs. Attendees at the Los Angeles, CA lab, ...
(Date:11/26/2014)... November 25, 2014 Miles Holder, formerly ... the Graphel Carbon Products team as Sales/Marketing Manager. Mr. ... and customer service for the graphite industry. , “We ... our team,” stated Dave Trinkley, VP of Market and ... range of experience in the graphite industry, along with ...
(Date:11/26/2014)... , Nov. 25, 2014 Bio-Techne Corporation ... has appointed Robert Gavin to serve in ... the Protein Platforms Division.  Mr. Gavin will be responsible ... segment, which includes the ProteinSimple business acquired in July ... San Jose, California -based ProteinSimple develops ...
Breaking Biology Technology:ASBM Presents European Physicians Survey at Spanish Ministry of Health 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 2SonaCare Medical Supports American Urology Association’s Small Renal Mass 360° Summit 3Miles Holder Joins Graphel Corporation as Sales/Marketing Manager 2Bio?Techne Announces Appointment Of Robert Gavin As Leader Of New Protein Platforms Division 2Bio?Techne Announces Appointment Of Robert Gavin As Leader Of New Protein Platforms Division 3
... CHAMPAIGN, Ill. Graphene, a single-atom-thick sheet of ... Whether graphene actually cuts it in industry, however, ... at the University of Illinois., Graphene consists of ... have predicted that the orientation of atoms along ...
... Ireland, Feb. 16 Copan Innovation Ltd., whose subsidiary ... and transport systems in the world, has named Bob ... in the Pacific Rim, as well as appointed Mr. ... Ltd. Bob Cooper, who brings a background of twenty ...
... aids in identifying connection between improved lipid profile and ... Using the VAP Cholesterol Test from Atherotech, ... an association between a rare gene mutation and heart ... help in the development of heart disease risk-lowering drugs ...
Cached Biology Technology:Scientists prove graphene's edge structure affects electronic properties 2Copan Announces the Appointment of Bob Cooper as Vice President of Business Development in the Pacific Rim 2VAP Cholesterol Test Helps In Search For New Heart Disease Drugs 2VAP Cholesterol Test Helps In Search For New Heart Disease Drugs 3VAP Cholesterol Test Helps In Search For New Heart Disease Drugs 4
Request Info...
... formation of a phosphodiester bonds between adjacent ... DNA molecules or between oligonucleotides which are ... 45 - 65?. Tfi DNA Ligase is ... than conventional DNA ligases, Thus, Tfi DNA ...
hnRNP U (H-94)...
... contains a unique β-agarose digesting enzyme developed ... intact DNA and RNA from low melting ... TAE, TBE, MOPS, or phosphate buffers. The ... TAE, TBE, MOPS, and phosphate electrophoresis buffers ...
Biology Products: