How does the environment influence
genetic traits?

Internal and external environmental factors, like gender and temperature, influence gene expression. ... Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.