Agriculture Reference
In-Depth Information
show a tendency to spread over a whole population. Also there is no
logic behind the idea that a recessive trait should die out.
Gene frequencies can be in high ratios or low ratios no matter
how the allele is expressed. The allele can also change, depending on
certain conditions. It is the changes in gene frequencies over time that
result in different plant characteristics.
Hardy-Weinberg Equilibrium will show us whether or not
gene frequencies have changed in a population.
A population is a group of individuals of the same strain or
species, [such as cannabis Indica or cannabis Sativa (species), or
Skunk#1 and Master Kush (strains of a species)], in a given area
whose members can interbreed with one another. This means that they
share a common group of genes. This common group of genes is
known as the GENE POOL.
Each gene pool contains all the alleles for all the traits of all
the population.
For a step in evolution to occur some of the gene frequencies
must change. That is why we have different types of cannabis plants.
The gene frequency of an allele refers to the number of times
an allele for a particular trait occurs compared to the total number of
alleles for that trait.
Gene frequency is calculated as follows.
The number of a specific type of allele, divided by, The total number
of alleles in the gene pool.
