Home  |  Top News  |  Most Popular  |  Video  |  Multimedia  |  News Feeds  |  Feedback
  Medicine  |  Nature & Earth  |  Biology  |  Technology & Engineering  |  Space & Planetary  |  Psychology  |  Physics & Chemistry  |  Economics  |  Archaeology
Top > Biology >
Sex, Tools And Chromosomes

Published: April 12, 2012.
By University of California - Davis

Researchers at the University of California, Davis have discovered a key tool that helps sperm and eggs develop exactly 23 chromosomes each.

During meiosis, the cell division process that creates sperm and eggs, matching chromosomes pair up and become connected by "crossing over" with each other, said Neil Hunter, a professor of microbiology at UC Davis and senior author of the new study.

These connections are essential for precise chromosome sorting and the formation of sperm and eggs with exactly the right numbers of chromosomes.

Hunter, graduate students Kseniya Zakharyevich and Shangming Tang and research associate Yunmei Ma, looked for enzymes that could cut DNA to form crossovers in yeast, which form sexual gametes, or spores, in much the same way that humans and other mammals form sperm and eggs.

Read Full Story »


Crossovers, Chromosomes, Hunter, Enzymes, Dna, Sperm, Role, Pair, Form, Eggs, Cut, Yeast, Step, Play, Meiosis, Humans, Essential, Davis, Crossover, Chromosome, …

Cluster Centroids (Superclass Keywords)

More news from University of California - Davis

Birthplace of the Domesticated Chili Pepper Identified in Mexico
21 April 2014
Reef Fish Arrived in 2 Waves
10 April 2014
Kinesin-5 Structure Opens Cancer Drug Targets
08 April 2014
Scientists Find Missing Piece of Air Particle Equation Hiding in the Walls
07 April 2014
Cleft Palate Discovery in Dogs to Aid in Understanding Human Birth Defect
07 April 2014
Field Study Shows Why Food Quality Will Suffer with Rising CO2
07 April 2014
Scientists Solve the Riddle of Zebras' Stripes
01 April 2014

Most Popular - Biology »
Bioinformatics Profiling Identifies a New Mammalian Clock Gene
Best Practices in Communication for the Animal World
Scientists Identify Critical New Protein Complex Involved in Learning And Memory
Biting Vs. Chewing
International Team Sequences Rainbow Trout Genome
PULLMAN, Wash.—Using fish bred at Washington State University, an international team of researchers has mapped the genetic profile of the rainbow trout, a versatile salmonid whose relatively recent genetic …
ScienceNewsline  |  About  |  Privacy Policy  |  Feedback  |  Mobile  |  Japanese
The selection and placement of stories are determined automatically by a computer program. All contents are copyright of their owners except U.S. Government works. U.S. Government works are assumed to be in the public domain unless otherwise noted. Everything else copyright ScienceNewsline.