This frog species evolved from a group that uses primarily auditory signals (songs) to attract mates. it lives near tropical waterfalls, where it can be difficult to hear those signals, and interestingly, has evolved a second signal, "leg-waving." develop a study design that might allow you to determine whether the leg-waving serves only to get attention, or if females use male leg-waving to assess mate quality.

Approximately what portion of the foods that we eat have been genetically modified in some way? a. fewer than 10% b. about 50% c. nearly 100%

Give examples of selective advantage of organism’s body part/organ

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.