What does it suggest about the number of genes

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What does it suggest about the number of genes controlling this trait in the above experiment? 8. Given two sets of experimental data showing traits controlled by oe or more genes, predict whether there was a strong influence of the environment in determining the trait. Similarly for polygenic inheritance. If a quantitative trait controlled by many different genes (eg 10 genes) and also influenced by environment was studied and plotted, what would the approximate frequency distribution of this trait appear as? 9. Given the ratios of the F2 expressing either extreme phenotype, be able to estimate the number of gene involved in determining the quantitative trait.
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10. Given the number of distinct phenotypic classes estimate the number of gene pairs or vice versa if both parents are heterozygotes. 11. Given genotype of parents (need not be heterozygotes at each gene pair) that control a quantitative trait, be able to predict maximum and minimum number of additive alleles within gametes, as well as range of phenotypes in offsprings as well as number of phenotypic classes.
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