Which statements describe dark matter? Select two options.

A: It is invisible.
B: It is the same as dark energy.
C: It is well understood by scientists.
D: It does not emit electromagnetic radiation.
E: It can be observed by shifts in red and blue light.

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