A comet is a meteoroid that travels through Earth’s atmosphere and hits the surface.

meteoroid that burns up in Earth’s atmosphere, producing a streak of light.

small, rocky object that orbits the Sun and is usually found in a belt between the orbits of Mars and Jupiter.

small object made of ice and dust that orbits the Sun and forms a coma as it approaches the Sun.

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