Genetics in humans cannot be studied by performing controlled crosses rather, analysis of inheritance patterns in an existing population must be used. An approach, called pedigree analysis, is used to study the inheritance of genes in humans. This session will outline how to construct a family pedigree, and how to interpret the information in a pedigree using Mendel’s laws of inheritance and an understanding of the chromosome theory of inheritance.
For this session, watch the video lecture called “Human Genetics” by Prof. Eric Lander recorded in 2004, starting partway into the lecture until the end.
The following pedigree represents the inheritance pattern of a specific genetic trait in humans. Assume the trait is common in the population. ![gensession3_quizzes.gif](/courses/7-01sc-fundamentals-of-biology-fall-2011/2550e3b6eb2d7737c03c6626fa4c3352_gensession3_quizzes.gif) This disorder could be inherited in which of the following ways?
Help Session Video
Watch the short video of Genny Gould explaining how to analyze a human pedigree (Question 2 in the practice problems below).
Suggested topics for further study in an introductory-level Biology textbook
- Constructing a family pedigree
- Pedigree analysis
- Chromosome theory of inheritance