File Edit View Go Tools Window Help (page 19 of 30)-Edited Q Search Use the foll

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File Edit View Go Tools Window Help (page 19 of 30)-Edited Q Search Use the following information for the next S questions (until you see a solid line): Joe Jones is a basketball fanatic. He realizes that he can use published information on the heights their wives and grown children to estimate the heritability of height in humans. He found that the average height of 100 players was 80 inches, that of their wives was 70 inches and that of their grown children (both )was 69 inches. The average height of the population as a whole (both sexes combined) was 65 inches (this value is NOT restricted to basketball players) 87) The estimated heritability of human height is: A) 03 B) 0.4 C) 0.5 D) 0.75 E) None of these answers are correct 88) If the tallest half of the players had an average height that was 86 inches, and their wives had an average height of 74 inches, then their grown children would be expected to have an average height of A) B) C) D) E) 75 inches 76 inches 78 inches 80inches None of these answers are correct 89) If a random sample of families from the population at large was used to make a plot of average height of grown children (Y axis) vs. average height of their parents (X axis), then the expected slope of the best-fitting line to these data would be:

Explanation / Answer

Ans 87. The appropriate option would be E which means none of these options would be correct. In a narrow sense the heritability of human height would be more than 0.8 and would be uptill 0.9 to 0.95 hence none of the options fall into the criteria.

Ans 88. The appropriate option would be E None of the answers would be correct. As per Grays method of height prediction the average height of children would be about 83 inches for male child and 76 inches for female child if the parents are having height of about 86 inches and 74 inches respectively.

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