Three linked traits in garden pea plants are each controlled by two alleles. Yellow pods are...

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Biology

Three linked traits in garden pea plants are each controlled bytwo alleles. Yellow pods are recessive to green pods, bluish greenseedlings are recessive to green seedlings, and creeper isrecessive to normal. A plant heterozygous for all three traits wascrossed to a creeper plant with yellow pods and bluish greenseedlings. The following F2 results were obtained: 171 green pods,bluish green seedlings, creeper 307 yellow pods, green seedlings,creeper 13 green pods, green seedlings, normal 2067 green pods,green seedlings, creeper 165 yellow pods, green seedlings, normal10 yellow pods, bluish green seedlings, creeper 2033 yellow pods,bluish green seedlings, normal 316 green pods, bluish greenseedlings, normal a. Determine the allele arrangement in theheterozygous parent. b. Determine the gene order of these threelinked genes. c. Construct a linkage map showing the map distancesbetween the three genes. d. Calculate an interference value.

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a Heterozygous parent allele arrangement YcByCb b Order of genes ycb c y1271cMc706 cMb d Interference 045 Explanation Hint Always recombinant genotypes are smaller than the nonrecombinant genotypes Hence the parental nonrecombinant genotype is YBc ybC Yellow pods y are recessive to green podsY bluish greenb seedlings are recessive to green seedlingsB and creeperc is See Answer

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