Flower color in Orcish Thimbleweed (Anemone sarumani) is controlled by two genes. At the G locus,...

Flower color in Orcish Thimbleweed (Anemone sarumani) is controlled by two genes. At the G locus, red flowers (G) is dominant to slate gray (g). At the W locus, colored flowers (W) is dominant to colorless (w). Plants with the genotype G-W- are red, ggW- are slate gray, and --ww are white. A true-breeding plant with red flowers is crossed with a true-breeding plant with white flowers, producing F1 offspring with slate gray flowers.

What is the expected phenotypic ratio for F2 progeny after selfing the F1?

		9:3:3:1
		9:3:4
		1:1:1:1
		3:1
		12:3:1

Expert Solution

Answer-

In a cross between true breeding red (GGWW) and true breeding white (ggww) flowered plants, the F2 ratio (phenotypic) will be 9 : 3 : 4

If F1 is slate gray (as mentioned in question), then parental red flowered plant's genotype will be (GgWW or GgWw). The expected phenotypic ratio in F2 will be 3 : 1

The explanation is given below:

gladiator answered 2 years ago

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