Place the following events in the order in which they occurred. Place the order number 1 through 7.
(nebula shrinks to form a spinning disk)
(gravity pulls gases to center of the disk)
(big bang)
(the planets form)
(gas and dust accumulate as a nebula)
(matter separates into galaxies)
(gas at the center of the disk becomes hot and dense enough for nuclear fusion to begin)

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