Which two salamander subpopulations would be least likely to reproduce successfully if brought together? A Salamanders L and M
The map shows the geographic distribution of salamander subpopulations that
descended from the common ancestor Ecoregoneris Over millions of years, the
salamanders moved south from what is now Oregon and northern California into areas
Salamanders L and N
to the east and west of California's Central Valley
The salamanders were initially separated by a large lake, and later by the unsuitable
© Salamanders P and N
habitat of the Central Valley itself. Because of this geographic barrier, gene flow among
some of these subpopulations is extremely limited, and in some cases has led to
reproductive isolation
D Salamanders P and O
California Salamander

The collared lizard is a species found in the desert southwest. male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. your tentative explanation is that male color plays a role in attracting females for mating purposes. you predict that females will preferentially choose brightly colored males over dull-colored ones. to test this prediction, you observed the interactions of female collared lizards with their male counterparts. you selected males that were the same age and size, and that differed only in their coloration pattern. you placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. in 3 instances, the females did not mate with either type. create a bar graph of your data, plotting the type of male (dull or brightly colored) on the x-axis. on the y-axis, plot the frequency with which each type of male was chosen by females. using this graph, answer the following question(s). is it reasonable to conclude (i. e., is it supported by the data) that female collared lizards prefer more brightly colored male lizards over dull-colored males?

What organ systems are working to you cool down after a workout?

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome