Suppose that an allele is present in pelican offspring that causes a nestling to share its food with its nestmate if it is not particularly hungry. this gene imposes a fitness cost of 0.2 on those who carry it, while conferring a benefit of 0.5 on the sibling who receives the additional food. will this gene increase in frequency if two nestmates are always full siblings?

a. yes, because rb – c > 0

b. yes, because rb – c < 0

c. no, because rb – c < 0

d. no, because rb – c > 0

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

Which of the following is a testable hypotheses?