BIO 30_Exam 3_Lec 11 C

for the number of gene pairs (n) to be valid:

• Alleles must have equal and addetive effects
• Genes assort independently
• Original parents are homozygous
• Original parents are heterozygotes
• Genes are linked

Quantitative trait loci (QTL) are

• Chromosomal regions containing genes
• that interact with environmental factors
• and influence quantitative trait
• Chromosomal regions containing metal residue
• and influence qualitative trait

Which is true for Quantitative Trait Loci (QTL)

• It is not a gene
• It is a map location for chromosomal region that associate with a trait
• It is a specific genetic sequence
• It is a map location for chromosomal regions that it reverses

If QTL has been identified,

• it can be studied for the presence of a specific gene
• It can detect metal residue in the nucleus
• It can reposition the position of a specific gene
• none of the above

Which is true for Quantitative Trait Loci (QTL)

• to localize chromosomal regions that significantly affect the variation of quantitative traits in a population
• this localization is important for the ultimate identification of responsible genes.
• to reverse the chromosomal regions that significantly affect the variation of quantitative traits in a population
• this localization is important for the ultimate identification gene reversals

QTL analysis is a statistical method that links:

• Phenotypic data (trait measurement)
• Genotypic Data (molecular markers)
• Phenotypic data (selective epistasis)
• Genotypoc data (chromosomal bridges)

attempts to explain the genetic basis of variation in complex traits

• Quantitative trait loci analysis
• Qualitative trait loci analysis
• none of the above

Mapping quantitative trait loci analysis

• Use molecular markers to map the position of the QTLs
• Inheritance of a molecular marker is associated consistently with the inheritance of a trait.
• Uses gene reversals to map the position of the QTLs
• Inheritance of cesium residue is associated with trait inheritance

Phenotypic variance (Vp) =

• Genotypic Variance (Vg)
• Environmental Variance (Ve)
• Genotype x Environmental interaction (Vg.e)
• Allelic Variance (Va)
• Reciprocal Variance (Vr)

Measure of the variability of a trait and is the variance due to the phenotype (Vp)

• Phenotypic Variance
• Genotypic Variance (Vg)
• Environmental Variance (Ve)
• Genotype x Environmental interaction (Vg.e)
• Allelic Variance (Va)