Hoy vamos a hablar sobre cómo se pueden expresar diferentes rasgos y como la forma en que se expresa un rasgo puede afectar el genotipo o fenotipo de una persona.
An example of pleiotropy, a person who inherits the mutated HBs gene will contract sickle-cell anemia which damages erythrocytes, the spleen and many other organs of the body.
When one gene influences multiple phenotypic traits. Examples would be sickle-cell anemia and phenylketonuria (PKU).
The degree to which an inherited allele is expressed in the phenotype. An example would be achondroplastic dwarfism; if a person inherits the allele and it presents, they will be a dwarf.
A gene that is partially controlled by genetics and partially controlled by the environment. For example, body height is genetic but nutrition growing up also influences height.
Variation of a trait that shows up in a population of people, body height for instance.
A trait that is determined by several genes.