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Filial Generations....
We hear the terms F1 and F2 thrown around a fair bit when referrring to cannabis breeding , but what does it really mean ??
Mendals legacy ...
Mendels genetics are frequently referred to as mendelian genetics , as gregor mendel discovered the principals of genetics in the mid 1800s , his most famous experiments were done with garden peas ..
mendel used peas that bred true for particular traits , ie green peas and yellow peas , he crossed a yellow pea plant with green , these two were referred to as the parental generation , abbreviated as the p generation , the fresulting offspring became the first filial generation of f1 genertatoin , these f1 plants were all yellow peas , mendel selfed the f1 plants ... 'selfing ' is when dthe pollen from a flower is used to fertalise the female part of t his same flower , by breeding the f1 generation with itself he produced a second filial generation of f2, mendel found that three quarters of his f2 generation were yellow peas and one quarter were green ..
These results lead mendel to propose theat each pea plant carried two genes for each trait and a parent could pass only one of its two genes for a given trait to its off spring , he surmised that since the f1 plants wer all yellow , this was a dominant trait and represented it with a capital Y,Green . which reappeared in the f2 generation , was recessive and therefore hidden in the f1 generation and he represented this with lower case y .
Each trait (eg colour) gets one letter asssigned to it ; this indicates that you have two forms (dominant and recessive )of the same trait and the alternative forms of the gene are called alleles (for example y or Y)
Mendel used interbreeding of filial generations to isolate and highlight the dominant and recessive action of the particular trait in the is case yellow and green pea seed, without outside genetic influence ..
SUMMERISING MENDEL.
The first filial generation are the offspring of a specific outcross mating: this is usually abbreviated to F1.
The second filial generation (F2) is the offspring of interbreeding the F1 generation , ie brother mated to sister .
Mate two f2 individuals and you get the third filial generation (F3) and so on .
Interbreeding the offspring from each succeeding generation brother to sister gives successive filial generations . This helps isolate the desired trait without outside genetic influence ..
We hear the terms F1 and F2 thrown around a fair bit when referrring to cannabis breeding , but what does it really mean ??
Mendals legacy ...
Mendels genetics are frequently referred to as mendelian genetics , as gregor mendel discovered the principals of genetics in the mid 1800s , his most famous experiments were done with garden peas ..
mendel used peas that bred true for particular traits , ie green peas and yellow peas , he crossed a yellow pea plant with green , these two were referred to as the parental generation , abbreviated as the p generation , the fresulting offspring became the first filial generation of f1 genertatoin , these f1 plants were all yellow peas , mendel selfed the f1 plants ... 'selfing ' is when dthe pollen from a flower is used to fertalise the female part of t his same flower , by breeding the f1 generation with itself he produced a second filial generation of f2, mendel found that three quarters of his f2 generation were yellow peas and one quarter were green ..
These results lead mendel to propose theat each pea plant carried two genes for each trait and a parent could pass only one of its two genes for a given trait to its off spring , he surmised that since the f1 plants wer all yellow , this was a dominant trait and represented it with a capital Y,Green . which reappeared in the f2 generation , was recessive and therefore hidden in the f1 generation and he represented this with lower case y .
Each trait (eg colour) gets one letter asssigned to it ; this indicates that you have two forms (dominant and recessive )of the same trait and the alternative forms of the gene are called alleles (for example y or Y)
Mendel used interbreeding of filial generations to isolate and highlight the dominant and recessive action of the particular trait in the is case yellow and green pea seed, without outside genetic influence ..
SUMMERISING MENDEL.
The first filial generation are the offspring of a specific outcross mating: this is usually abbreviated to F1.
The second filial generation (F2) is the offspring of interbreeding the F1 generation , ie brother mated to sister .
Mate two f2 individuals and you get the third filial generation (F3) and so on .
Interbreeding the offspring from each succeeding generation brother to sister gives successive filial generations . This helps isolate the desired trait without outside genetic influence ..
