* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Deducing Genotypes - Life is a journey: Mr. T finding his way
Survey
Document related concepts
Pharmacogenomics wikipedia , lookup
X-inactivation wikipedia , lookup
DNA paternity testing wikipedia , lookup
Synthetic biology wikipedia , lookup
Inbreeding avoidance wikipedia , lookup
Public health genomics wikipedia , lookup
Genome (book) wikipedia , lookup
Biology and consumer behaviour wikipedia , lookup
Microevolution wikipedia , lookup
Population genetics wikipedia , lookup
Genetic drift wikipedia , lookup
Genome-wide association study wikipedia , lookup
Quantitative trait locus wikipedia , lookup
Transcript
Deducing Genotypes Song Hee Bae IB1 Biology Pedigree Charts • • • • How a trait can pass Whether dominant or recessive Whether sex-linked or not Sex-linkage o Ex) color blindness, hemophilia • • • • • Similar to family tree Squares = male Circles = female Shaded = affected Not shaded = unaffected Huntington’s Disease • Whether mother’s genotype is Hh or HH • Consider genotypes of next generation • Affected people o First daughter o Forth son o Fifth son • Unaffected people o Second and third sons o Grand daughter • Mother must be Hh Using Test Crosses • To distinguish between Dominant X Dominant / Dominant X Recessive • A subject is crossed with homozygous w w W Ww Ww W Ww Ww w w W Ww Ww w ww ww ww Ww W – long ears w – short ears Vocabulary • Pedigree chart: diagram which are constructed to show biological relationships. • Sex linkage: any genetic trait whose allele has its locus on the X chromosome. • Test cross: a method to distinguish whether the individuals that might have the same phenotype are influenced by dominant / recessive allele. Reference • IB Study guides page 29 • Pearson Biology SL page 105, 108~109