428 Statistics and Data Analysis for Microarrays Using R and Bioconductor
Can the β-actin gene be used as housekeeping gene for normalization
purposes?
3. It is suspe cted that a certain pollutant present in very low amounts in
certain rivers acts as a carcinogen for the aquatic mammals living in
those waterways. The mechanism is believed to be related to a certain
gene G. A biologist studying gene G collected samples from different
rivers. The expression level of this gene was measured in individuals of
the same species and recorded in the ta ble below.
St. Clair Detroit St. Lawrence Hudson Potomac
Measurement 1 15 14 20 10 32
Measurement 2 16 20 31 15 10
Measurement 3 14 19 19 21 12
Measurement 4 19 21 14 25 13
Measurement 5 20 26 41
Measurement 6 19
Are ...