Tag: "hermaphroditic" at biology news

The recombination gender gap

...les of sex-biased recombination. For example, some hermaphroditic species of flatworms lack sex chromosomes altogether but still display marked differences in male and female recombination rates. Lenormand and Dutheil realized that selection was not necessarily limited to the adult stage and that differences in sel...

Sperm trading can resolve hermaphrodite mating conflicts

... the bizarre reproductive conflicts encountered by hermaphroditic animals. In some hermaphroditic species, such as C. hirundinina, mating partners may insist on copulating as a "male," "female," or ...

Pesticide combinations imperil frogs, probably contribute to amphibian decline

...hormone estrogen. He was able to produce identical hermaphroditic malformations in frogs by administering estrogen or blocking androgen at the proper time of development. "One week of exposure at the critical time is all that's required to make these males look feminine, which probably interferes with mating," he s...

Worms under stress

...roducing strains are more pollution sensitive than hermaphroditic strains. This in turn has a negative effect on the population growth rate. Alda Alvarez also observed that following the pollution, the toxicity of the nematodes does not increase but is variable. Gene regulation Additionally from a genetic viewp...

New clues to how sex evolves

... they're on. It could be that C. elegans, which is hermaphroditic and grows to maturity in only three days, is under a lot of competitive pressure to reproduce quickly, and that different binding sites on different Pairing Centers makes for faster chromosome pairing and thus faster reproduction -- unlike organisms ...

1

(Date:10/17/2014)... news release is available in German . ... only a very few drugs. When treating overdoses, doctors are ... is especially difficult if there is a combination of drugs ... playing and accidentally swallows his grandmother,s pills? ETH professor Jean-Christophe ... wanted to find an answer to this question. "The task ...
(Date:10/16/2014)... William and Mary,s Virginia Institute of Marine Science ... Environmental Protection Agency to identify the streams and ... develop tools to help local governments and citizens ... critically on a dataset of tidal-marsh observations first ... with this historical baseline can today,s researchers accurately ...
(Date:10/16/2014)... Melbourne researchers have challenged conventional thinking on how the ... new mechanism for how bowel cancer starts. , The ... maintaining and regenerating the ,crypts, that are a feature ... are involved in bowel cancer development, a controversial finding ... existence. , Using 3D imaging technologies, Dr Chin Wee ...
Breaking Biology News(10 mins):Emergency aid for overdoses 2Emergency aid for overdoses 3EPA grant will help localities conserve headwater wetlands 2EPA grant will help localities conserve headwater wetlands 3Cryptic clues drive new theory of bowel cancer development 2
Other Tags
feelfisherhonoringcongressionalexplosivepreparescdx2diversificationscientistsohsudeathscardiacantioxidantstestspeechnew