Parental generation
As a parental generation ( "parent generation" ) is both the behavioral sciences as well as in genetics the initial group of a lineage called.
The parental generation can consist of only two individuals (male and female), but also of a larger group of individuals of different sexes who are kept together and can mate at will.
The next generation (i.e. the immediate descendants of the parental generation) is called the branch generation . Especially when the descendants of the descendants must also be clearly named, an index number is used as an identifier for the degree of relationship in relation to the parent generation : the 1st branch generation is then referred to as the generation, the 2nd branch generation accordingly as the generation etc.
These exact descriptions of the relationships in animal breeding and in plant breeding are relevant . For example, if a certain behavior or a physiological characteristic is to be optimized through systematic selection and you want to state exactly how many generations the desired result of breeding was achieved.
In a similar way, the initial individuals of crosses are also referred to as the parental generation. Their offspring (i.e. the first-degree half-breeds) are called - hybrids , the second-degree half-breeds (i.e. the offspring from the mating of -hybrids with -hybrids) are called -hybrids.
In scientific publications, the parental generation is often abbreviated with "P" and the subsequent generation without further specification with " ".
Web links
- Biology Course: Introduction to Classical Genetics. Examples from genetics for parent and branch generations
- Inheritance of blood groups. An example from genetics for parent and branch generations