Navigation Links
Scientists Map Genomes of One Man's Sperm
Date:7/19/2012

THURSDAY, July 19 (HealthDay News) -- Scientists say they've mapped the entire genomes of 91 sperm from one man, the first time such gene mapping has been done in a human gamete (sperm or egg cell).

The research gives a glimpse into recombination -- the process by which DNA mixes to create offspring that carry with them traits from parents and grandparents, the Stanford University scientists explained.

"We were able to generate an individual recombination map and mutation rate for each of several sperm from one person," study co-author Barry Behr, director of Stanford's in vitro fertilization laboratory, said in a university news release. "Now we can look at a particular individual, make some calls about what they would likely contribute genetically to an embryo, and perhaps even diagnose or detect potential problems."

The findings were published July 20 in the journal Cell.

Until now, scientists had only been able look to population-wide studies to try and gauge how often recombination happened in sperm and eggs cells, and how complicated the process might be, the Stanford team stated.

The new study focused on the sperm of a healthy 40-year-old man who had normal sperm and had already fathered healthy offspring. The study found that prior population studies were fairly accurate in assessing rates of recombination.

The team reported that, as expected, the man's sperm each had undergone about 23 recombinations of DNA, although there were wide variations in this genetic mixing between individual sperm. Two of the sperm sampled were missing entire chromosomes, the authors pointed out.

Between 25 and 36 "new single nucleotide mutations" were also spotted -- random mutations that can affect offspring for good or ill.

"The exact sites, frequency and degree of this genetic mixing process is unique for each sperm and egg cell," study senior author Stephen Quake, a professor of engineering,
'/>"/>

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Page: 1 2

Related medicine news :

1. Scientists Say Blood Test May Help Predict Alzheimers
2. Scientists find new way to induce programmed cell death, or apoptosis
3. New York Stem Cell Foundation scientists featured for new model of Alzheimers disease
4. SIgN scientists discover dendritic cells key to activating human immune responses
5. UW scientists discover why human body cannot fight HIV infection
6. Scientists Pinpoint Antibody That May Be Specific to MS Patients
7. Scientists first to see trafficking of immune cells in beating heart
8. Scientists develop new strategy to overcome drug-resistant childhood cancer
9. Damon Runyon Cancer Research Foundation grants fellowship awards to 21 top young scientists
10. Scientists at the Mainz University Medical Center gain new insights into Taspase1 function
11. Scientists develop mouse model that could lead to new therapies for liver cancer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists Map Genomes of One Man's Sperm
(Date:8/21/2014)... According to a new market research report "Near ... and Auxiliary), Application (Payment, Transportation, Booking, Data Sharing, Service, ... Geography - Global Forecasts to 2022", published by MarketsandMarkets, ... Billion by 2022 at an estimated CAGR of 8.83% ... Tables and 105 Figures spread through 298 Pages and ...
(Date:8/21/2014)... 21, 2014 It's a terrible thing when ... to a serious substance abuse issue. When that happens to ... action is getting reliable help from the qualified substance abuse ... facility isn’t always easy for those young adults living in ... significant addiction issue. , Thankfully there is a new ...
(Date:8/21/2014)... Rockville, Maryland (PRWEB) August 21, 2014 ... developed with guidance from Lockton Companies and builds ... the industry’s only cellular glucometer, combined with Accountable ... and robust data analytic capabilities and adds a ... provider care, including eye exams, provider visits, HbA1c ...
(Date:8/21/2014)... (PRWEB) August 21, 2014 Sleep Apnea Doctors ... the U.S. This provides doctors with a convenient way to ... a doctor are that much closer to finding remedies ... no idea they are experiencing this sleep disorder , ... treatment at all. , Thanks to Sleep Apnea Doctors U.S., ...
(Date:8/21/2014)... (PRWEB) August 21, 2014 Relias Learning, ... the health and human services markets, announced the latest ... capabilities incorporating the Tin Can API. , “Supporting ... employees have the most advanced mobile learning capabilities and ... adult learning tools and techniques,” says Jim Triandiflou, CEO ...
Breaking Medicine News(10 mins):Health News:Near Field Communication Market by Product (IC/Chips, Tags, Readers, and Auxiliary) Worth $16.25 Billion by 2022 – New Report by MarketsandMarkets 2Health News:Near Field Communication Market by Product (IC/Chips, Tags, Readers, and Auxiliary) Worth $16.25 Billion by 2022 – New Report by MarketsandMarkets 3Health News:Near Field Communication Market by Product (IC/Chips, Tags, Readers, and Auxiliary) Worth $16.25 Billion by 2022 – New Report by MarketsandMarkets 4Health News:Young Adults in Pompano Beach, FL Are Finding Success With Innovative New Helpline 2Health News:Accountable Health Expands Diabetes Management Solutions to Address Gaps in Provider Care 2Health News:Accountable Health Expands Diabetes Management Solutions to Address Gaps in Provider Care 3Health News:Sleep Apnea Doctors US is Now Offering Complimentary Listings to Sleep Apnea Doctors Across the United States 2Health News:Relias Learning Announces Support for Tin Can API 2
... (HealthDay News) -- Infants with Down syndrome who weigh less than ... lung disorders that increase their chances of dying, a new study ... than 50,000 very low birth weight (VLBW) infants who weighed between ... this group of babies, those born with Down syndrome were about ...
... that control the age of sexual maturation in women. ... weight regulation or biological pathways related to fat metabolism. ... was a collaborative effort by the international ReproGen consortium, ... Boston University School of Medicine (BUSM) and Boston University ...
... 1. Low Income Individuals Are Donating Fewer Kidneys ,Kidney ... Research shows that people with low incomes are ... receive a living donor kidney transplant than people of other ... kidneys, Jagbir Gill, MD (St. Paul,s Hospital, University of British ...
... HealthDay Reporter , FRIDAY, Nov. 19 (HealthDay News) -- ... from the U.S. market because they,ve been linked to ... Friday. The U.S. Food and Drug Administration said ... is voluntarily taking the drugs off the market. The ...
... , FRIDAY, Nov. 19 (HealthDay News) -- A new, small ... doctors determine the best dose of tamoxifen, a drug commonly used ... that the body absorbs cough medicine at about the same rate ... respond to the breast-cancer drug. "This study is starting ...
... 16, 2010) A clinical trial that aims to speed ... of breast cancer now has a designated study site ... University of Colorado Hospital. This study, called I-SPY ... Response with Imaging and Molecular Analysis 2) will evaluate ...
Cached Medicine News:Health News:Tiniest Newborns With Down Syndrome Face Other Health Risks 2Health News:Genes link puberty timing and body fat in women 2Health News:Efforts needed to address disparities in kidney transplantation 2Health News:Efforts needed to address disparities in kidney transplantation 3Health News:Efforts needed to address disparities in kidney transplantation 4Health News:FDA Pulls Darvon and Companion Drug Due to Heart Risks 2Health News:FDA Pulls Darvon and Companion Drug Due to Heart Risks 3Health News:Cough Syrup Might Help With Dosing of Breast Cancer Drug 2Health News:I-SPY 2 study speeds up treatment for breast cancer 2Health News:I-SPY 2 study speeds up treatment for breast cancer 3
(Date:8/21/2014)... - Bedrocan Cannabis Corp., previously Bedrocan Canada Inc. ("Bedrocan") ... of Directors, enhancing executive oversight and strengthening the ... licensed producer of medicinal cannabis in ... experience in producing and supplying government-regulated pharmaceutical-grade cannabis ... As previously announced in a press ...
(Date:8/21/2014)... CYBX ) today announced results for the quarter ended ... Operating results for the first quarter of fiscal ... other achievements, include: , Worldwide net product sales of ... net sales of $13.2 million, an increase of 14.5% on ... reached a new high of $58.8 million, an increase of ...
(Date:8/21/2014)... Calif. , Aug. 21, 2014 Asterias ... the emerging field of regenerative medicine, announced today the ... to the Company,s newly expanded Board of Directors. With ... eight directors, three of whom are independent. ... experience working with emerging growth companies. He is currently ...
Breaking Medicine Technology:Senior Life Sciences Executives Join Bedrocan as Independent Directors 2Senior Life Sciences Executives Join Bedrocan as Independent Directors 3Cyberonics Reports Fiscal 2015 First Quarter Results 2Cyberonics Reports Fiscal 2015 First Quarter Results 3Cyberonics Reports Fiscal 2015 First Quarter Results 4Cyberonics Reports Fiscal 2015 First Quarter Results 5Cyberonics Reports Fiscal 2015 First Quarter Results 6Cyberonics Reports Fiscal 2015 First Quarter Results 7Cyberonics Reports Fiscal 2015 First Quarter Results 8Cyberonics Reports Fiscal 2015 First Quarter Results 9Cyberonics Reports Fiscal 2015 First Quarter Results 10Cyberonics Reports Fiscal 2015 First Quarter Results 11Cyberonics Reports Fiscal 2015 First Quarter Results 12Cyberonics Reports Fiscal 2015 First Quarter Results 13Cyberonics Reports Fiscal 2015 First Quarter Results 14Cyberonics Reports Fiscal 2015 First Quarter Results 15Cyberonics Reports Fiscal 2015 First Quarter Results 16Asterias Biotherapeutics Appoints Two Independent Directors and Announces Completion of Series A Common Stock Distribution 2Asterias Biotherapeutics Appoints Two Independent Directors and Announces Completion of Series A Common Stock Distribution 3Asterias Biotherapeutics Appoints Two Independent Directors and Announces Completion of Series A Common Stock Distribution 4
... today,announced that its WaveReady 3000 series has ... compatible with Brocade-based Storage Area,Network (SAN) infrastructures ... Data Center Ready Program. The program is ... Brocade-based data center,environments., "We are pleased ...
... Covers Compositions and Methods, ROCKVILLE, Md., June ... clinical-stage pharmaceutical company developing,therapeutics for the treatment of ... U.S. Patent No. 7,371,741 covering analogs of 2-,methoxyestradiol ... use intellectual property protection through 2025 for analogs,of ...
Cached Medicine Technology:JDSU WaveReady Receives Brocade Data Center Ready Status for Brocade-Based Storage Area Network (SAN) Infrastructures 2JDSU WaveReady Receives Brocade Data Center Ready Status for Brocade-Based Storage Area Network (SAN) Infrastructures 3EntreMed Receives New Patent for 2-Methoxyestradiol Analogs 2EntreMed Receives New Patent for 2-Methoxyestradiol Analogs 3
Desmarres Retractor Size 4...
Desmarres Lid Retractor thin solid blades. Size 2....
... system introduces a new level ... microsurgical instrumentation. It has an ... with advanced microcomputer control of ... operate with a full range ...
Multiple Modulation Phaco (MMP) programmability with eight surgeon settings for maximum versatility. The combination of the peristaltic power balanced pump and the piezoelectric handpiece results in ...
Medicine Products: