Many of the Color Varieties of Summer Squash Are Determined

question 33

Multiple Choice

Many of the color varieties of summer squash are determined by several interacting loci: AA or Aa gives white,aaBB or aaBb gives yellow,and aabb produces green.Crosses among heterozygotes give a 12:3:1 ratio.What type of gene interaction would account for these results?

• A)multiple alleles
• B)epistasis
• C)incomplete dominance
• D)conditional lethal
• E)complementation

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