This means that each dominant allele "adds" to the expression of the next dominant allele. Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles.
Some parts of the ocean never receive sunlight.
Answer: true
I believe it is B but I’m not 100% sure
The smallest and most exclusive grouping category is species.
