Quantitative and Qualitative Traits Flashcards
qualitative traits definition
have a few distinct states
individuals belong to a few types
expressed in words
have discontinuous distributions (bar graph)
quantitative traits definition
traits have a continuous distribution (bell curve)
individuals can have many possible types
expressed in numbers
normal frequency distribution
individuals can have any value in the distribution
every quantitative trait has a frequency distribution
quantitative traits are always determined by…
both genes and the environment working together
most quantitative traits are affected by…
many genes and many environmental factors
interbreeding reduces…
variation
quantitative traits involve ____ each with a _____ which add up to ____
many genes, small effect, big effect
GWAS
genome-wide association studies