If two stresses differ quantitatively from inside the penetrance levels and/or expressivity having a specific attribute, it will become difficult to build antique reproduction crosses that may discover brand new loci with it. Alternatively, each RI strain brings an endless number of dogs towards the exact same homozygous genotype. Hence, from investigation away from an acceptable number of dogs, it gets you’ll so you can quantitate the levels from penetrance and expressivity and you will representative collection of sized suggest and you will standard deviation with each RI genotype. Additionally, it is only as easy so you’re able to map recessive attributes given that principal characteristics due to the fact RI stresses are completely homozygous.

RI challenges also are useful in men and women cases where several pets need to be forfeited to produce an individual phenotypic commitment. Читать далее →