Search results for separate sexes:
Why Don’t More Animals Change Their Sex
Biology /
Feb 02, 2009 |
5 / 5 (3) |
3
(PhysOrg.com) -- Most animals, like humans, have separate sexes — they are born, live out their lives and reproduce as one sex or the other. However, some animals live as one sex in part of their lifetime and then switch ...
Fungi can tell us about the origin of sex chromosomes
Biology /
Mar 17, 2008 |
4.3 / 5 (3) |
0
Fungi do not have sexes, just so-called mating types. A new study being published today in the prestigious journal PLoS shows that there are great similarities between the parts of DNA that determine the sex of plants and an ...
Two from one: new research maps out evolution of genders from hermaphroditic ancestors
Biology /
Nov 20, 2008 |
4.9 / 5 (11) |
1
Research from the University of Pittsburgh published in the Nov. 20 edition of Heredity could finally provide evidence of the first stages of the evolution of separate sexes, a theory that holds that males and females develo ...
In the war between the sexes, the one with the closest fungal relationship wins
Nov 10, 2009 |
not rated yet |
0
The war between the sexes has been fought on many fronts throughout time -- from humans to birds to insects, the animal kingdom is replete with species involved in their own skirmishes. A recent study by Dr. Sarah Eppley ...
Species thrive when sexual dimorphism broadens their niches
Biology /
May 09, 2007 |
5 / 5 (1) |
0
Some Caribbean lizards' strong sexual dimorphism allows them to colonize much larger niches and habitats than they might otherwise occupy, allowing males and females to avoid competing with each other for resources and setting ...
Despite 'peacenik' reputation, bonobos hunt and eat other primates too
Biology /
Oct 13, 2008 |
4.7 / 5 (6) |
2
Unlike the male-dominated societies of their chimpanzee relatives, bonobo society—in which females enjoy a higher social status than males—has a "make-love-not-war" kind of image. While chimpanzee males frequently band together ...
Ohio wife, husband both battling breast cancer
Oct 12, 2009 |
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0
(AP) -- A husband and wife are both undergoing treatment for breast cancer in a case that illustrates how the disease can strike both sexes. Mike and Barbara Welsh, of Monroe, in southwestern Ohio, each had surgery this ...
Evolution of the Sexes: What a Fungus Can Tell Us
Biology /
Jan 09, 2008 |
4.1 / 5 (11) |
0
Fungi don't exactly come in boy and girl varieties, but they do have sex differences. In fact, a new finding from Duke University Medical Center shows that some of the earliest evolved forms of fungus contain clues to how ...
Why Do Males and Females Frequently Differ in Body Size and Structure?
Biology /
Oct 08, 2007 |
4.4 / 5 (7) |
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As even the most casual observer of nature knows, males and females frequently differ in body size, form and structure. But how these differences have developed – a topic studied for decades by evolutionary biologists – is ...
Ready when you are: First evidence that visual cues affect timing of sexual maturation
Biology /
Feb 14, 2007 |
4.2 / 5 (11) |
0
Scientists from the Universities of Exeter and Glasgow today reveal how some females become sexually mature more quickly if they see attractive males. Research published today in the Royal Society journal Biology Le ...
Colorectal cancer risks quantified
Apr 17, 2009 |
5 / 5 (2) |
1
Although the presenting features of colorectal cancer are well known, the risks they confer are less well defined. New research published in the open access journal BMC Medicine describes the exact risks posed by eight clinic ...
Tailoring the optical dipole force for use on molecules
Oct 29, 2009 |
3.5 / 5 (6) |
1
(PhysOrg.com) -- "Scientists have been working with dipole fields for quite some time," Peter Barker tells PhysOrg.com. "However, most of the work is focused on very small particles, like atoms, or on larger particles, such a ...
Fish with temperature-dependent sex determination face global warming
Biology /
Jul 30, 2008 |
4.6 / 5 (8) |
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In vertebrates with separate sexes, sex determination can be genotypic (GSD) or temperature-dependent (TSD). TSD is very common in reptiles, where the ambient temperature during sensitive periods of early development irreversibly ...
Short Strand of RNA May Help Predict Survival and Response to Treatment for Patients with Liver Cancer
Oct 08, 2009 |
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(PhysOrg.com) -- A small RNA molecule, known as a microRNA, may help physicians identify liver cancer patients who, in spite of their poor prognosis, could respond well to treatment with a biological agent called interferon. ...
New research says winning a Nobel Prize adds nearly 2 years to your lifespan
Jan 16, 2007 |
3.3 / 5 (7) |
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New research by the University of Warwick reveals that a Nobel Prize brings more than just cash and kudos - it can also add nearly two years to your life.
