Nicotiana longiflora is a wild plant species, native to South America, that is often planted in gardens and landscapes as ornamental flower species. It produces trumpet-shaped flowers with fused petals. It naturally self-fertilizes in nature to form inbred lines that are fully homozygous for all alleles of all genes, although humans can artificially cross-fertilize it. In a classic and highly influential experiment, that contributed to the development of the concept of heritability, Edward East cross-pollinated two different genotypes of wild plants of the species (published in 1916 in Genetics 1: 164-176). The two parental types were fully homozygous for all alleles of all genes due to many generations of natural self-fertilization. He obtained F 1 plants from this cross then allowed them to naturally self-fertilize to produce an F 2 generation. He then observed the following data for the length of the flower, measured in millimeters: Here are graphs of these data: a + + Which of the following is nearest the correct estimate of V E in this experiment? \begin{tabular}{|} \hline 65.67 \\ \hline 5.76 \\ \hline 3.09 \\ \hline 36.61 \\ \hline \end{tabular} .

1. Nicotiana longiflora is a wild plant species, native to South America, that is often planted in
gardens and landscapes as ornamental flower species. It produces trumpet-shaped flowers with
fused petals. It naturally self-fertilizes in nature to form inbred lines that are fully homozygous
for all alleles of all genes, although humans can artificially cross-fertilize it. In a classic and
highly influential experiment, that contributed to the development of the concept of heritability,
Edward East cross-pollinated two different genotypes of wild plants of the species (published in
1916 in Genetics 1: 164-176). The two parental types were fully homozygous for all alleles of all
genes due to many generations of natural self-fertilization. He obtained F 1 plants from this cross
then allowed them to naturally self-fertilize to produce an F 2 generation. He then observed the
following data for the length of the flower, measured in millimeters: Here are graphs of these
data: a + + Which of the following is nearest the correct estimate of V E in this experiment?
begin{tabular}{|} hline 65.67 hline 5.76 hline 3.09 hline 36.61 hline end{tabular}