Part 1 In potatoes, skin colour is determined by the interaction of the P and Y loci, each of which has two alleles. A dominant P allele together with a dominant Y allele (P_Y_) result in a brown skin, while a potato homozygous recessive at both loci has a green skin. All other genotypes produce a yellow skin colour. a) What is the genetic relationship between the two alleles at the P locus, and between the two loci that influence skin colour? b) You cross a PPYY plant is crossed with a PpYy plant. The cross produces 32 potatoes. How many of these would you expect to have a yellow skin?

Part 1 In potatoes, skin colour is determined by the interaction of the P and Y loci, each of which has two alleles. A dominant P allele together with a dominant Y allele (P_Y_) result in a brown skin, while a potato homozygous recessive at both loci has a green skin. All other genotypes produce a yellow skin colour. a) What is the genetic relationship between the two alleles at the P locus, and between the two loci that influence skin colour? b) You cross a PPYY plant is crossed with a PpYy plant. The cross produces 32 potatoes. How many of these would you expect to have a yellow skin?

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Description: Part 1In potatoes, skin colour is determined by the interaction of the P and Y loci, each of which has two alleles. A dominant P allele together with a dominant Y allele(P_Y_) result in a brown skin, while a potato homozygous recessive at both loci

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 13TYK: Some recessive alleles have such a detrimental effect that they are lethal when present in both...

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