Question

The following pertains to questions 1-2. Let's say you EMS treat C. elegans, scan for interesting phenotypes, and pick an adult hermaphrodite with an unusually long body. The long body phenotype is referred to as Lon. You establish a homozygous true breeding Lon mutant strain and name it lon-9. Through crosses you discover that the lon-9 mutant allele is recessive. Let's say you work out that the lon-9 gene is X-linked. Ion-2 is an X-linked gene and the Ion-2(e432) allele is a recessive allele associated with the Lon phenotype. Write out a cross that you can do to determine if lon-9 complements Ion-2 Define your allele symbols used under both complementation and non- complementation Write out the genotypes, sexes, and phenotypes of the parents under complementation and non-complementation. Write out the genotypes, sexes and ratios, and phenotypes of the offspring under complementation and non-complementation. a. b. c. Non-Complementation Complementation

Answer 1

-2 (e 43) alle le 1s a ece ssive phenotypeTe X-1nked gene and the on lll associated fth the In an x-linked γe cessive gene mod e'' rroleg expre 99 the phenotype İf the chromosome X ;g Car ying the gecessWe allele Cit doesn't matte Y.what alle|e İgon on the Y choms omeond wmnexpreg te mutont phenotype whenthe are homorygou for the IxaltOouble rece sgive The allele b used onder Conleme rtalon Complementotion on -9 Jecessfve alleleLo ond non-Complementat Tona Non- Complemental lon Allele Symbol dommant allele -A 0 ominaTt allele

and pheretypes of "Pa effsg ben CoMPLEMENTAT ION NON COMPLEMENT-ATION ents Parents PARENTS GametsCAbx aa Bo a B x A by a Bx aBx A b OFF SPPIN OFFSPRIN en 507, Ab aB