In autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is  very near the centromere of the chromosome carrying it. The allele G for green stigma is dominant  to g for red stigmas. A homozygous green autotetraploid strain is crossed with a homozygous red  autotetraploid strain.   a. What is the genotype of the Fl1? b. Show the types of gametes the Fl's may be expected to form and derive the expected  proportion of each. Show your solution.  c. What phenotypic ratio of green to red is expected if:  the Fl's are intercrossed? Show your solution.  the Fl's are crossed with red plants? Show your solution. d. If the G locus were 50 or more map units from the centromere, what types and proportions  of gametes would the Fl be expected to produce? Derive the expected F2 phenotypic ratio.

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