What is an R1 strain?
R1 is the reversal of one strain and crossing it over a different strain. Both create feminized seed from STABLE strains.
What is F1 F2 F3 in genetics?
When displaying crossings between two parental organisms, the resulting offspring are referred to as F1. If those offspring are crossed between themselves, the resulting generation is called F2. If two individuals of the F2 generation are crossed, they produce the F3 generation.
Are F1 cars hybrids?
Since 2009, F1 cars have technically been hybrids because of the KERS, or kinetic energy return system, which uses exhaust to store energy that can add horsepower in short bursts. Over time, F1 regulations on fuel quantity and burn rate have incentivized many more hybrid developments.
Do F1 hybrids produce seeds?
Seeds saved from F1 hybrid plants will not produce plants that are true to the parent type. F1 hybrid seed is expensive as it has to be recreated by crossing the parent inbred lines again. Self pollination of the parent inbred lines leads to poor quality plants called ‘selfs’.
What do P F1 and F2 represent in genetics?
P means parental generation and they are the only pure plants, F1 means first generation and they are all hybrids that show the dominant trait, and F2 means second generation, which are the grandchildren of P.
What was Mendel’s hypothesis?
Each trait is determined by pairs of discrete physical units (now called genes) Pairs of genes separate from each other during gamete formation (Law of Segregation) There may be two or more alternative forms of a gene (alleles)
What is difference between phenotype and genotype?
A genotype refers to the genetic characteristics of an organism. A phenotype refers to the physical characteristics. For example, having blue eyes (an autosomal recessive trait) is a phenotype; lacking the gene for brown eyes is a genotype.
What are the 3 types of genotypes?
There are three types of genotypes: homozygous dominant, homozygous recessive, and hetrozygous.