What is Polygenic Inheritance? A) When one gene has many effects

We now understand that there are exceptions to Mendel's principles. For example, the inheritance pattern where two or more genes do NOT assort independently because they are on the same chromosome is called: a) Mendelian inheritance b)linkage c)genomic imprinting d) dominance e) epistasis

The pedigree pictured is of an extended family where a large percentage of family members develop colon cancer at an early age. In this family, individuals either get colon cancer before the age of 16, or they don’t get it at all. a) Based on the information you have been given, what evidence, if any, suggests an inherited contribution to the development of this disease? b) You take a medical history of all 33 people in the pedigree and discover that a large percentage drink a special coffee on a daily basis, while others do not. The individuals who do not drink coffee are I-1, II-2, II-4, II-9, III-7, III-13, IV-1, and IV-3.  Could drinking this special coffee play a role in colon cancer? Explain.

In fruit flies, yellow body is a sex linked recessive allele. The dominant allele is dark bodied. If a female with a yellow body mates with a male with a dark body, then what percent of the male offspring will be yellow? O O O O a) 0 b) 25 c) 50 d) 75 e) 100