In considering the cross yyrr x yyrr, the phenotype ratios of the f2 generation will be 1: 3: 1 3: 1 9: 3: 3: 1 4: 1

answer; i believe the correct answer is (anemia);

a- all cells come from pre-existing cells

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.