Snuffleups are small, ant-eating mammals that live deep in the jungles of Brazil. They possess a nose that varies between 3 inches long and 19 inches long. The exact length of the nose is determined by quantitative loci. If one crosses a 19-inch nosed snuffleup with one that has a 3-inch nose, one gets F1 offspring with 11-inch noses. When one crosses two F1 individuals, one gets an array of nose lengths from 3 inches to 19 inches long. However, among the F2, 3-inch noses occur only about 1 in 256 offspring and 19-inch noses occur about one in 256 offspring. Two 11-inch nosed F1 individuals are crossed. How often will their progeny have noses 9 inches long? Two 11-inch nosed F1 individuals are crossed. How often will their progeny have noses AT LEAST 15 inches long?
Snuffleups are small, ant-eating mammals that live deep in the jungles of Brazil. They possess a nose that varies between 3 inches long and 19 inches long. The exact length of the nose is determined by quantitative loci. If one crosses a 19-inch nosed snuffleup with one that has a 3-inch nose, one gets F1 offspring with 11-inch noses. When one crosses two F1 individuals, one gets an array of nose lengths from 3 inches to 19 inches long. However, among the F2, 3-inch noses occur only about 1 in 256 offspring and 19-inch noses occur about one in 256 offspring.
Two 11-inch nosed F1 individuals are crossed. How often will their progeny have noses 9 inches long?
Two 11-inch nosed F1 individuals are crossed. How often will their progeny have noses AT LEAST 15 inches long?
A cross between 19 inch-nosed snufflepuff and 3-inch-nosed snufflepuff produces 11 inch noses. The trait is quantitative which means that the trait shows a particular set of range. The 3 inch size and 11 inch size are the extreme phenotypes.
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