Question

genotype rrgg rrgg rrgg rrgg predicted outcome 500 500 500 500 actual outcome 900 900 100 100 which phenomenon would she hypothesize accounts for the pattern she sees? crossing-over independent assortment respiration cytokinesis

Explanation:

The table shows actual outcomes (900 each for RrGg and rrgg, 100 each for Rrgg and rrGg) deviating from equal predicted outcomes. This pattern—more parental genotypes (RrGg, rrgg) and fewer recombinant genotypes (Rrgg, rrGg)—is explained by linked genes with rare crossing-over (which produces recombinants). Independent assortment would yield equal outcomes; respiration/cytokinesis are unrelated to genetic inheritance patterns.

Answer:

crossing-over