The structure of D-arabinose is shown below. How many stereoisomers are possible for this molecule?

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#Question id: 37955

#Plant Biotechnology

Which specific fraction of the pollen population is primarily targeted for success in anther culture experiments? 

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#Question id: 37956

#Plant Biotechnology

To improve the frequency of androgenesis (pollen response) in tissue culture, which pretreatment is recommended? 

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#Question id: 37957

#Plant Biotechnology

During the induction phase (e.g., in Nicotiana tabacum), which significant cytoplasmic event occurs? 

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#Question id: 37958

#Plant Biotechnology

What approximate percentage of the total pollen population constitutes the "responsive" fraction (S-grains)? 

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#Question id: 37959

#Plant Biotechnology

In the context of pollen embryogenesis, which of the following best describes the "commitment to androgenesis"? 

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#Question id: 37960

#Plant Biotechnology

During the induction phase of pollen culture in wheat, which specific protein is synthesized under the regulation of ABA (Abscisic Acid)?