Agriculture Reference
In-Depth Information
know a few rules......but like most things there are exceptions to the
rules.
Back to frequencies:
We know that if two heterozygous parents are crossed that the
ratios will be 50/50 with regards to the allele (Remember the genotype
can be Ss, SS or ss, but the allele is either S or s. Look at the table
below when we cross two heterozygous parents and count the alleles.
SS
Ss
Ss
ss
We can see S S S S (4 x S) and s s s s (4 x s).
