Outline how the tympanal organ of green lacewings may have evolved by natural selection.
When high frequency sound is detected, receptor cells in the tympanal organ stimulate impulses in sensory neurones. Describe the sequence of events that produces an action potential in a sensory neurone. The first event in the sequence has been given for you: Calcium ions move into the cytoplasm of the receptor cell.
Describe the sequence of events that leads to an action potential in a sensory neurone. The first event in the sequence has been given for you: Calcium ions move into the cytoplasm of the receptor cell.
C. carnea and C. downesi, two green lacewing species, originated from a common ancestor. Their populations overlap in parts of North America. Table 9.1 compares the characteristics of the overlapping populations of both species. Suggest how speciation took place to produce the two different species of green lacewing.