These use water as an immersion liquid and allow biologists to examine specimens in a watery medium without the burden of a cover slip confining the living organisms.
Copperfield had hired biologists and geologists to examine the fountain's potential effects on humans.
Thus, this model system provides evolutionary biologists a unique opportunity to examine the reproductive barriers most important in preventing gene flow between hybridizing taxa, and to evaluate the evolutionary consequences when reproductive barriers are incomplete and natural hybridization takes place.
Ask an experienced fish breeder or biologist to examine your gouramis if you do not remember the name they were sold under.
Kelly Benoit-Bird, marine biologist She uses sophisticated sound equipment to examine the behaviour of ocean creatures and to address long-unanswered questions about how the food chain works under the waves.
Parts 2 and 3 will be shown on May 11 and 18 at 9 p.m. 8 P.M. (13, 49) SUPERFISH In this "Nature" episode the filmmaker and biologist Rick Rosenthal takes to the seas to examine the life cycles of the highly prized billfish -- marlin, sailfish, spearfish and swordfish -- with stops at nurseries and secret undersea canyons along the Baja Peninsula of Mexico and the Great Barrier Reef off Australia.
Molecular biologists have long used reporter genes to study promoter/regulatory elements involved in gene expression, inducible promoters to examine the transduction of gene expression, and transgenes containing endogenous promoters fused to a reporter gene to study endogenous gene expression.
Biologists, in addition to examining the wildlife, are interested in how harsh temperatures and the presence of people affect adaptation and survival strategies in a wide variety of organisms.
Incremental bands in the matrix of teleost bone, particularly scales, is well known to fisheries biologists, who examine the banding patterns to determine the age of a fish, and conditions of the environment in which it lived [29].
Eisen, for one, laments not being able to jump into a soil submarine to explore underground, the way marine biologists examine the deep sea.
