Quantcast

Latest Gamete Stories

First Genetic Sequence Of Individual Human Sperm
2012-07-20 07:58:23

Connie K. Ho for redOrbit.com — Your Universe Online Sperm cells can look the same with a similar tadpole appearance. However, the cells showcase differences among the genes. Recently, researchers were able to capture an image of the varieties among genes which they say is particularly helpful in understanding the genome and male fertility. The research is featured in the July 20 edition of Cell, a Cell Press journal. The scientists believe that the methods used could help...

2012-05-01 16:26:09

High-powered microscopes reveal workings of the cell -- results could impact treatment of Down syndrome, lissencephaly (a brain formation disorder) or cancer Scientists using high-powered microscopes have made a stunning observation of the architecture within a cell — and identified for the first time how the architecture changes during the formation of gametes, also known as sex cells, in order to successfully complete the process. The findings by the international team led by...

Sex, Tools And Chromosomes
2012-04-12 10:28:06

Researchers at the University of California, Davis have discovered a key tool that helps sperm and eggs develop exactly 23 chromosomes each. The work, which could lead to insights into fertility, spontaneous miscarriages, cancer and developmental disorders, is published April 13 in the journal Cell. Healthy humans have 46 chromosomes, 23 from the sperm and 23 from the egg. An embryo with the wrong number of chromosomes is usually miscarried, or develops disorders such as Down's syndrome,...

2011-03-17 21:00:03

A team of researchers at the Instituto Gulbenkian de Ciência (IGC), Portugal, discovered that pollen, the organ that contains the plant male gametes, communicate with the pistil, their female counterpart, using a mechanism commonly observed in the nervous system of animals. This study not only reveals a new mechanism which underlies reproduction in plants, but also opens an exciting new avenue in the study of how cell-cell communication is conserved between animals and...

2010-10-22 01:38:48

Researchers at the Swedish medical university Karolinska Institutet have been able to describe the 3D structure of a complete egg receptor that binds sperm at the beginning of fertilization. The results, published in the journal Cell, will lead to better understanding of infertility and may enable entirely new types of contraceptives. For centuries, the imagination of people has been grasped by the encounter of gametes "“ egg and sperm-, whose union gives rise to a new individual. At...

56d2d19f2ac64275a4c966d6c95488371
2010-04-16 08:31:19

A multicellular green alga, Volvox carteri, may have finally unlocked the secrets behind the evolution of different sexes. A team led by researchers at the Salk Institute for Biological Studies has shown that the genetic region that determines sex in Volvox has changed dramatically relative to that of the closely related unicellular alga Chlamydomonas reinhardtii. Their findings, which will be published in the April 16th issue of the journal Science, provide the first empirical support for a...

2010-03-08 09:25:57

Argonaute 9 inhibits asexual reproduction, apparently by silencing transposons One seemingly insurmountable obstacle to the dream of virtually limitless yields of staple crops like corn, wheat and rice is the dependence of those plants on sexual reproduction. When male and female gametes -- sperm and egg -- combine randomly to generate a genetically unique seed, valuable parental traits painstakingly selected by breeders are erased. But what if plants like these could be engineered to...

2009-10-15 13:31:00

Prototype Anonymous Donor Database In Development FAIRFAX, Va., Oct. 15 /PRNewswire-USNewswire/ -- Four of America's leading donor sperm providers have formed a new, non-profit association, the Association of Gamete Donor Providers (AGDP). AGDP will help donor gamete providers to share information and services, enhance educational programs and promulgate policies and activities to benefit individuals and organizations involved in all aspects of building families with the help of donor...

2009-07-02 13:02:44

Science is running ahead of public debate and guidelines to grapple with use of stem cell-derived eggs and spermMore than 40 scientists, bioethicists, lawyers and science journal editors are calling on their colleagues, policy makers and the public to begin developing guidelines for the research and reproductive use of stem cell-derived eggs and sperm, even though such use may be a decade or more away."Science has always moved faster than social debate or society's ability to grapple with...

c3e64b2343a44a4170803f7e76b6b1911
2009-04-10 08:00:00

University of Nevada School of Medicine researcher leads important discoveryUniversity of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant implications for male infertility and contraception.This important discovery has been published in Nature Genetics, one of the highest-ranking journals in the field of biomedical research based upon the impact...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
Related