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Ch. 2 - Transmission Genetics

Chapter 2, Problem 5

In tomato plants, purple leaf color is controlled by a dominant allele A, and green leaf by a recessive allele a. At another locus, hairy leaf H is dominant to hairless leaf h. The genes for leaf color and leaf texture are separated by 16 m.u. on chromosome 5. On chromosome 4, a gene controlling leaf shape has two alleles: a dominant allele C that produces cut-leaf shape and a recessive allele c that produces potato-shaped leaf.

The cross of a purple, hairy, cut plant heterozygous at each gene to a green, hairless, potato plant produces the following progeny:

        Phenotype             Frequency %   _
  Purple, hairy, cut                21
  Purple, hairy, potato           21
  Green, hairless, cut            21
  Green, hairless, potato       21
  Purple, hairless, cut            4
  Purple, hairless, potato.      4
  Green, hairy, cut                  4
  Green, hairy, potato.            4  _
                                             100
Give the genotypes of parental and progeny plants in this experiment.

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