* Hormones are carried by the blood, but they don't directly change genes. Hormones are chemical messengers that travel through the bloodstream to reach target cells and tissues. They influence the activity of these cells by binding to specific receptors on their surface or within the cell. This interaction triggers a series of events within the cell, leading to changes in its function, such as growth, metabolism, or reproduction.

* Genes are the blueprints for building and maintaining an organism. They are contained within the DNA and determine the traits an individual inherits. While hormones can influence gene expression (how much or how little a gene is used), they don't alter the genetic code itself.

* "Genetically conditioned" is not a commonly used term in biology. It's better to say that hormones influence gene expression, which means they regulate how genes are read and translated into proteins.

In summary:

* Hormones travel through the bloodstream.

* They interact with target cells to influence their activity.

* This influence can involve changes in gene expression, but not changes in the DNA sequence itself.

Let me know if you have any other questions!