Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 14 - 14.4 - Concept Check - Page 290: 4


The difference is due to the small sample size in the human pedigree: with only 2 children, it is impossible to get an accurate picture of the ratios which are possible.

Work Step by Step

This question highlights the importance of large sample sizes for genetic work and the need for pedigree analysis in humans and other organisms when one cannot obtain data on many offspring in a given generation.
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