Fossil records show that the size of black bears in europe increased during each glacial period and decreased during the interglacial periods. identify the type of selection that occurred during each period and discuss how the type of selection supports the claim that a single environmental factor can yield a variety of phenotypic responses from different genotypes within a population.

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?

9. the history of life on earth is recorded in

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species