Certificate In Psychology (CPSY) Practice Exam

Epigenesis refers to the process in which:

1. the multicellular mass becomes implanted in the uterus.

2. the zygote divides into four cells.

3. new forms of the zygote emerge from preceding forms and current environment.

4. new forms of the zygote appear as a result of meiosis.

The correct answer is: new forms of the zygote emerge from preceding forms and current environment.

Epigenesis is a biological concept that describes the process through which new forms or structures develop from previous stages, influenced by both genetic and environmental factors. This notion reflects the dynamic interplay between an organism's genetic makeup and the external conditions it experiences during development. The correct response highlights that new forms of the zygote emerge not just due to intrinsic genetic instructions, but also as a result of interactions with the current environment. This perspective aligns with the broader understanding of development, where variations can arise due to environmental influences, thereby helping explain the complexity and diversity of biological forms. The other options do not accurately capture the essence of epigenesis. For instance, the implantation of a multicellular mass in the uterus, simple cellular division, or development resulting solely from meiosis (the process by which gametes are formed) focus more on specific developmental stages or mechanisms rather than the overarching process of generating new forms as a response to both inherited genetics and environmental cues.