Traits that fall into two or more discrete categories
discontinuous traits
100
Traits that do not fall into discrete categories.
quantitative (or continuous) traits
100
Heritability is the amount _______ that is due to genetic variation
phenotypic variation
100
Dog breeds arose domestically this many times.
twice
200
Statistic that is the same as average
mean
200
Statistic for the dispersion of data around the mean
Variance
200
When heritability = 1
All variation is due to genetic variation
300
Regions of the chromosome that affect quantitative traits
Quantitative Trait Loci (QTL)
300
Type of variance that can be added to predict the total variance for the trait
Additive variance
300
Heritability due to additive effects
Narrow sense heritability
300
What did QTL analysis indicate about the origin of domestic sunflower?
Origin not in Mexico
400
When this effect is high, phenotypes do not fall in discrete categories via their genotypes
environment
400
QTL mapping utilizes RFLPs or this other marker type to determine QTL location
Microsatellites
400
Expected phenotypic correlation for identical twins
1
400
This indicates that selective breeding will no longer have an effect on the phenotype through artificial selection.
selection limit
500
Doing a QTL analysis involves two crosses. The first occurs between two different strains (large vs. small fruit). The second takes those hybrids back to the parents. This is what type of cross.
Backcross
500
Overlap in phenotypic trait expression is often due to this factor (as seen in plants)
The environment
500
Heritability values are only valid for...
The population and environment in which that population is found.
500
When narrow sense heritability is calculated for selection, the ______ the value, the greater the likelihood for evolution.