Tag: "sticklebacks" at biology news
Fish may show how nature diversifies
...iological differences among the various species of sticklebacks
to changes in the genome. We see this as our chanc...rope, and Asia. These waters were colonized by the sticklebacks
marine ancestors, which adapted to life in fresh water. The spiny fish, which are one- to six-inches...
Stanford researchers develop system for field testing mechanisms of evolution
... to the genetic architecture of two populations of sticklebacks
for some answers. "What made sticklebacks
so appealing was that not only did they meet our criteria from a molecular and genetics standpoint, ...
NHGRI funds two new centers of excellence in genomic science
...inct stickleback populations as different species, sticklebacks
from different groups can be crossbred in the laboratory and produce fertile offspring. A genetic analysis of the progeny can then pinpoint the chromosomal regions responsible for the parental diversity. After identifying genes of interest in the s...
Evolution's mirror in a fish's spines
...ce age ended some 11,000 years ago, populations of sticklebacks
rapidly colonized newly formed freshwater streams ...ations with many large predatory insects that hunt sticklebacks
by grabbing hold of the spines. "Although vastly different morphologies have evolved in different st...
Sticklebacks reveal secrets to evolutionary change in Stanford study
...fish called the threespine stickleback. Pockets of sticklebacks
were isolated by geologic changes at the end of th...looked at two populations of freshwater threespine sticklebacks
that had lost their hind fins. Working with senior co-author Dolph Schulter of the University of Bri...
Millennia still mean early days for newly identified sex chromosome
...mes evolve. Researchers have found that threespine sticklebacks
have a Y chromosome that is less than ten-million years old, which is quite young in evolutionary time. The evolution of a genetic sex-determination system is often accompanied by the evolution of sex chromosomes. Over the last century, insightful th...