corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of the corn plants (i.e the tassel) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male fertile corn plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male sterile lines  Using the cardboard chips, simulate the crosses indicated below. Give the genotypes and phenotypes of the offsprings in each cross, and properly label the nucleus and the cytoplasm of each individual in the cross    Legend     male sterile cytoplasm      Male fertile cytoplasm      FF nucleus      Ff nucleus      ff nucleus    A. Male sterile female x FF male  Explain the phenotype of the offspring  B. Male sterile female x Ff male  Explain the phenotype of the offspring

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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In corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of the corn plants (i.e the tassel) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male fertile corn plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male sterile lines 

Using the cardboard chips, simulate the crosses indicated below. Give the genotypes and phenotypes of the offsprings in each cross, and properly label the nucleus and the cytoplasm of each individual in the cross 

 

Legend

    male sterile cytoplasm 

    Male fertile cytoplasm 

    FF nucleus 

    Ff nucleus 

    ff nucleus 

 

A. Male sterile female x FF male 

Explain the phenotype of the offspring 

B. Male sterile female x Ff male 

Explain the phenotype of the offspring 

 

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