BI226 2009 Section 8: Quantitative Genetics
•Qualitative characters can be classified into discrete non-numerical cat
while quantitative characters are often dist ributed continuously and are measured in
•Quantitative characters are often influenced by several genes and by environmental
•Description of quantitative inheritance typica lly relies on statistical summaries such
as means and variances.
•Phenotypic variation may be subdivi ded into genetic and environmental
components which are then used to analy ze inheritance of quan titative characters.