Questions:
- Why does sexual reproduction result in genetic diversity or variation? (brain)
- If skin color is actually controlled by 11 different genes what does that mean? (brain or book)
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A cactus can either have long needles (L) or short needles (l). A cactus grower crosses two cacti. The cross is shown in the Punnett square below. 
What is
the phenotype ratio for this cross?
answer choices for number 3:
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A. Four long, zero short
· B. Two long, two short
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C. Three long, one short
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D. One long, three short
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