Circumpolar. Circumpolar constellations are visible all year round. In the northern hemisphere, the famous circumpolar constellation is Ursa Major (The Big Dipper) which rotates around the North Star Polaris which always stays in the same place.
If a white female cat and a black male cat produce offspring that are both black and white, this is an example of codominance. The reason for this is that a person who has A allele and a person who have B allele will have blood type AB.
