By mass
The liver
In general
The skin
"Protostome" is the one type of invertebrate among the choices given in the question that this statement describes. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your real help.
Answer:
sorry bro you dont have a link to this or you did not type all of it
Explanation:
Our genes can be affected by the environment and change the way our traits are displayed, called the phenotype. However, changes in phenotype have an underlying genotypic source. Epigenetics or epigenetic changes are changes in the way traits are expressed as an effect of the environment (i.e. food we ate, chemicals in the body, environmental stresses), without changes in the DNA. Simply put, in epigenetics, some parts of the DNA are turned on or off in response to environmental conditions.