Texas Longhorn Cattle Have Been Bred to Increase the Tip

question 34

Multiple Choice

Texas longhorn cattle have been bred to increase the tip to tip width of their horns,and the heritability of this trait has been well studied by Professor David Hillis at the University of Texas,Austin.In the current generation,the mean horn length is 52 inches.If only a subset of this population,with a mean horn length of 61 inches,are allowed to reproduce,and the narrow-sense heritability of this trait = 0.2,what is the expected horn length in the offspring generation?

• A)~1.8 inches
• B)~9 inches
• C)~54 inches
• D)~61 inches
• E)Cannot be determined based on the information provided

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