When the effects of genes add up to make the phenotype, they are called genes?

additive genes.

Explanation:

Additive genes are found in Polygenic Inheritance.

In this pattern of inheritance, the phenotype is conditioned by two or more pairs of allele genes, one of which is called the additive gene, and the other is the indifferent or nonadditive gene. Each additive gene present in an individual determines the increase in phenotype expression intensity, no matter which pair this additive gene is. Nonadditive genes add nothing to phenotype expression.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.