Chapter Five, Environment
The concepts of pleitropy and genetic pluralism are introduced. A brief history of the study of asthma is used as the case study. Asthma is related to as many as fifteen different genes, many on chromosome five. Specifically, this includes a change from adenosine (A) to guanine (G) at position 46 on the ADRB2 gene. The ADRB2 gene is related to the control of bronchodialation and bronchoconstriction.
Read more about this topic: Genome (book)
Famous quotes containing the word environment:
“For those parents from lower-class and minority communities ... [who] have had minimal experience in negotiating dominant, external institutions or have had negative and hostile contact with social service agencies, their initial approaches to the school are often overwhelming and difficult. Not only does the school feel like an alien environment with incomprehensible norms and structures, but the families often do not feel entitled to make demands or force disagreements.”
—Sara Lawrence Lightfoot (20th century)