What is the other name for "incomplete dominance"?

Apart from pea plants,it has sometimes been observed that the $F_1$ phenotype does not resemble either of the two parents and is in between the two. This is due to .....

In pea plant,genotype $(Bb)$ shows $-$

The $F_1$ hybrid is intermediate between the two parents. This phenomenon is known as:

When both the genotype and phenotype ratios are the same in the $F_2$ generation,it is an example of:

In Mirabilis,a hybrid for red $(RR)$ and white $(rr)$ flower produces pink $(Rr)$ flower. $A$ plant with pink flower is crossed with a white flower,the expected phenotypic ratio is