biological approach Flashcards
what is meant by genotype?
an individuals genetic code.
what is meant by phenotype?
how their genetic code is expressed - observable traits or characteristics.
explain why johns genotype won’t reveal whether he will suffer the disease.
the genetic test reveals the genotype not the phenotype.
johns genotype will only reveal his set of genes and not any interactions he’s had with the environment.
environmental factors may contribute to the disorder.
the genetic test will not reveal whether he will develop the disorder.
two identical twins have very different personalities - use your knowledge of genotype and phenotype to explain this.
they have an identical genotype as they are monozygotic twins so they can develop the same personalities as each other if no other factors intervene.
the difference in personalities over time has been influenced by being in different environments e.g their phenotypes are different as one may have been more encouraged to more sociable than the other.
