Early theories of inheritance Flashcards
1
Q
Trait
A
characteristic of an organism expressed by genes/envoirment
2
Q
What two contradicting theories did Charles Darwin create?
A
- Blending inheritance
- Natural selection
3
Q
Examples that effect fetal development but not their genomes
A
- maternal malnutrition
- alcoholism
- drug addiction
4
Q
Genome
A
a complete set of genes
5
Q
Blending inheritance:
A
Traits in offspring resembles the average of their parents
6
Q
The problems with the theory of blending inheritance
A
- Doesn’t explain the reappearance of traits that “disappears”
- Variation gets lost overtime
- contradicts the concept of natural selection
