BIOLOGY 305 Lecture Notes - Lecture 5: Ascus, Centromere, Wild Type
Document Summary
Linkage and recombination: three strains of neurospora contain different mutations: one is fluffy (fl), one is tuft (tu), and the third is peach (pe). When crossed pairwise, the progeny were as follows: tu x fl tuft fluffy wild-type tuft, fluffy. What is the map order and gene distances: the pedigree for a family afflicted by two autosomal dominant traits, a & b, is shown below. A & b are on the same chromosome 15 mu apart. What is the probability that the child in question will have both a & b: in drosophila, yellow body and miniature bristle are due to sex-linked recessive mutations. Wild type flies have grey bodies and normal bristle length. A true-breeding yellow, miniature female is crossed with a wild-type male. Among the f1, all females are wild-type and all males are yellow, miniature. The f1 are allowed to intercross to produce the f2.
