You can tell it's not a dominant trait because it would show in all the grandchildren.
Recessive
#12 is heterozygous
A: Anisotropy ; Angstrom ; Astrophysics
T: Terrestrial (planet[s]) ; telescope ; tectonics
(if that's what you meant)
☺
It can be confusing because it isn't specific enough. In astronomy, the big dipper is not a spoon. It is a bear. Scientists know it as Ursa Major rather than a dipper or bear.