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What percentage of chocolate labs would be produced from the mating of a yellow lab who is homozygous recessive for both genes to a black lab who is heterozygous for both coat colour and expression?

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Related questions

A female yellow Labrador retriever homozygous for coat colour(bbee) is mated with a male black lab. They have two chocolatepuppies, three black puppies and one yellow puppy. What is thegenotype of the father? Use Punnett squares to proove.

In Labrador retrievers, coat color can be golden, black or chocolate. Golden animals result from recessive epistasis, and have an e/e genotype. Black and chocolate labs have a dominant E allele and are either B- (if black) or bb (if chocolate). The nose color of golden labs can be black or chocolate, depending on the alleles at B/b. Two dihybrid black labs are mated. What fraction of offspring is expected to be golden with a black nose?

1) If you are told 9.8% of the population suffers from arecessive condition, what is the frequency of the dominant allele(rounded to three decimal places)?

2)In Labrador Retrievers, the coat colour is controlled by 2loci. If we consider only the locus that controls the black orchocolate colours and we observe that of the 415 labs that areeither black or chocolate, 390 of them are black and (415 - 390)are chocolate. What is the frequency of the recessive chocolateallele (two decimal places)?

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