Genetics and Disease Flashcards
What did Louis Pasteur do?
Created The Germ Theory - postulated that disease was causes by germs.
What did Claude Bernard postulate?
The constancy of the internal environment is the condition for free and independent life.
What is GxE?
Genetics x Environment
The product of GxE is…
…the environment.
Phenotype refers to…
…the observable properties of an organism, its morphology and physiology.
What is morphology?
Its appearance
What is physiology?
How it functions.
In terms of Morphology the effect of the environment on genetics is …
…mainly adaptive
In terms of Physiology the effect of the environment on genetics is…
…mainly acclimative
What are the three main environmental categories?
1) Climatic
2) Physical
3) Biotic
What are climatic factors?
- Seasonal variation
- Weather
What are physical and chemical factors?
- Nutrition
- Anthropometric compounds
- Geological/mineral
What are biotic factors?
- Disease/symptoms
- Competition
You can remove the nucleus in some cells and they will …
…continue living for over a month – life is not just genetics
The contribution of each of these factors to a trait phenotype can be determined by …
…calculating the heritability ratio