One of the characteristics you're looking for is whether the organism is a vertebrate (with a backbone) or an invertebrate (without a backbone).
Red and white show incomplete dominance
Incomplete dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
Hope this helps! I'm happy to help with any other questions you might have :)
A fish swims with it's fins and breathes under water with it's gills.
You can use dimensional analysis to figure this out.
× 
= 3 grams
If done correctly, ml and ml will cancel out, leaving you with grams.
If you don't know dimensional analysis, simply multiply <em>3 ml</em> by <em>1 grams </em>and that should still get you 3 grams.