On the planet Fugus, there is a species of flowers, Dontdrinkmycola, that has tw

Question

On the planet Fugus, there is a species of flowers, Dontdrinkmycola, that has two special loci: Bach01 and Bach02. At Bach01, there are two alleles in the population: A (dominant) and a (recessive). Similarly, at locus Bach02, there are two alleles in the population: B (dominant) and b (recessive).

Individuals with the A_ genotype at Bach01 have mauve colored petals, and individuals with the aa genotype have teal colored petals. Likewise, individuals with the B_ genotype at Bach02 have mauve colored petals, and individuals with the bb genotype have teal colored petals.

In a cross between two doubly heterozygous Dontdrinkmycola flowers, the following number of offspring are produced: 280 offspring with mauve colored petals, and 220 teal-colored petals. The most likely form of epistasis here is: ?

Explanation / Answer

Answer:

Duplicate recessive epistasis: 9:7

Explanation:

280:220 = 9:7

When there is arecessive allele masking the expression of dominant alleles at two loci, this is known as duplicate recessive epistasis.

A_B_ = mauve colored petals

A_bb or aaB_ or aabb = teal colored petals

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