Which of the following is the adaptation that allows animals to survive in high altitudes, which contain lower levels of oxygen? a. Migration b. Higher levels of hemoglobin c. Insulating feathers d. Higher body temperatures Please select the best answer from the choices provided A B C D.

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4