Below are some of the crosses of fish that were mated to produce sighted offspring in a single generation. The fish (true-breeding) were taken from caves and mated to true-breeding fish from caves in different locations. You know that blindness is controlled by multiple genes and inherited in a recessive fashion.

Based on these results, at least how many genes are working to produce sight?

Cave 1 Fish Cave 2 Fish Cave 3 Fish Cave 4 Fish Cave 5 Fish
Cave 1 Fish Blind Blind Sighted Sighted Sighted
Cave 2 Fish Blind Blind Sighted Sighted Sighted
Cave 3 Fish Sighted Sighted Blind Sighted Blind
Cave 4 Fish Sighted Sighted Sighted Blind Sighted
Cave 5 Fish Sighted Sighted Blind Sighted Blind

a) 1 b) 2 c) 0 d) 4 e) 5

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.