What is the Difference Between Somatogenic and Blastogenic Variation?
🆚 Go to Comparative Table 🆚The main difference between somatogenic and blastogenic variation lies in the cells they affect and their inheritable nature.
Somatogenic variation:
- Affects the somatic cells of an organism.
- Caused by external influences, such as environmental conditions like temperature, light, and food.
- Not inheritable and not transmitted to offspring.
- Lost with the death of the organism.
- Can be the result of conscious efforts in intelligent animals, such as training pets, receiving education, or mutilations in pets.
Blastogenic variation:
- Affects the germ cells of an organism.
- Inheritable and transmitted to offspring.
- Can be present in ancestors or suddenly formed.
- Divided into two types: continuous or discontinuous.
- Continuous blastogenic variation: involves quantitative characteristics.
- Discontinuous blastogenic variation: defined as sudden, unpredictable, inheritable departures from the normal without any intermediate stage.
In summary, somatogenic variations are non-inheritable changes in the somatic cells caused by external factors, while blastogenic variations are inheritable changes in the germ cells that can be present in ancestors or suddenly formed.
Comparative Table: Somatogenic vs Blastogenic Variation
Here is a table comparing somatogenic and blastogenic variations:
Feature | Somatogenic Variations | Blastogenic Variations |
---|---|---|
Affected Cells | Somatic cells | Germ cells of gonads |
Inheritability | Not inheritable | Inheritable |
Occurrence | During the lifespan of an individual | During gametogenesis in parents |
External Influence | Occurs due to external influences upon the body of the organism | Occurs in the germ cells of the organisms and has no external influence |
Role in Evolution | Not a factor for evolution | Form the basis for evolution |
Somatogenic variations affect the somatic cells of an organism and are not inheritable, whereas blastogenic variations affect the germ cells of an organism and are inheritable. Somatogenic variations occur during the lifespan of an individual due to external influences, while blastogenic variations occur during gametogenesis in parents and have no external influence.
- Somatic Variation vs Germinal Variation
- Organogenesis vs Somatic Embryogenesis
- Germline Mutation vs Somatic Mutation
- Morula vs Blastula
- Somatic vs Germ Cells
- Somatic vs Germline Gene Therapy
- Sporogenesis vs Gametogenesis
- Blastocyst vs Embryo
- Blastula vs Gastrula
- Embryonic vs Somatic Stem Cells
- Differentiation vs Morphogenesis
- Histogenesis vs Morphogenesis
- Spermatogenesis vs Spermiogenesis
- Somatic Hypermutation vs V(D)J Recombination
- Gametogenesis vs Embryogenesis
- Micropropagation vs Somatic Cell Hybridisation
- Vegetative Propagation vs Spore Formation
- Artificial Embryo Twinning vs Somatic Cell Nuclear Transfer
- Genetics vs Embryology