Here's a breakdown:

* It's NOT completely true that genetic engineers have NO control: Genetic engineers can design genes to be integrated into specific locations within the genome, and they can choose to target germline cells (cells that give rise to sperm and egg). This increases the chances of the gene being passed on to offspring.

* However, it's also NOT completely false: There are limitations.

* Integration into the genome can be unpredictable: The gene may not integrate into the intended location, or it might integrate in a way that disrupts other genes.

* Gene expression is complex: Even if the gene is successfully integrated, it might not be expressed in the offspring, or it might be expressed differently than intended.

In summary:

Genetic engineers can increase the likelihood of a transferred gene being passed to offspring, but they cannot guarantee it. The success rate depends on factors like the target organism, the specific gene, and the integration method used.

Furthermore:

* There are ethical concerns about the potential for genetic engineering to unintentionally alter the genetic makeup of future generations.

* This is why there are strict regulations and ongoing research to ensure the safety and responsible use of genetic engineering techniques.