Sometimes genetic testing leads to the finding of variants that are neither benign or pathogenic, which are difficult for patients and medical teams. Which three letter abbreviation is used to denote these?

Enter the abbreviation only (three letters)

Coat

colour in Labrador retriever dogs is controlled by epistasis, the ee genotype

(yellow coat) being epistatic to the B gene (which controls black or brown

colour, brown being recessive). In a cross between dogs with the Eebb (brown)

and EeBb (black) genotypes, what proportion of the offspring would result in

Labradors with yellow coats? 

Give your answer as a percentage, do not include the % sign.