A cactus can either have long needles (L) or short needles A cactus grower crosses two cacti. The cross is shown in the Punnett square below. What is the phenotype ratio for this cross?

A

Explanation:

The long needles, according to the punnet square, is dominant compared to the short needles. Dominance in a phenotype in a punnet square is represented via the capitalization of the letters that represent the phenotype. In this case, since 3 out of 4 of the squares have capitalized letters in them, the dominant trait (LONG NEEDLES) have dominance over short needles in these squares. Recessive traits don't or have an extremely low chance of showing, hence why blue eyes aren't very common. Since blue eyes are recessive traits, they don't show a whole lot when a dominant eye color such as brown is presented into the genetic makeup of an individual. 3 squares are dominated by 3 L's and 1 square is dominated by a lowercase l, which when you create the ratio, is 3:1.

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hope i spelled it right lol

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-lavira: )