Agene cannot react chemically and form a trait without the proper

A gene cannot react chemically to form a trait f the proper enzymes are not present. The formation of a trait from the gene is dependent on the expression of the gene. The gene expression is a process which involves the help of the various enzymes. The absence of any of these essential enzymes will make it impossible for the gene to express the trait for which it is coded.

The answer is 'enzymes'.

Enzyme.

Explanation:

Enzymes are bio catalyst that can increase the rate of a biochemical reaction. Enzymes are important for the cell metabolism, protein formation and digestion of a particular substance.

Gene may be defined as the functional segment of the DNA that codes for the particular protein. The gene are chemically reactive and forms the particular trait in presence of the enzyme. The enzyme catalysis the reaction and helps in the formation of the trait from the gene.

Thus, the answer is enzyme.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

hi i’m going crazy about going tomorrow and i’ll tell you what i’m doing and i wanna is a way ya