Using a Large Poster Board, Construct a Punnet Square Involving

question 20

Essay

Using a large poster board, construct a Punnet Square involving three genes for skin color. One of the parents is completely dominant for all three genes and the other parent is completely recessive for all three genes. Then construct a graph of the number of offspring (y-axis) versus phenotype (skin color from lightest to darkest on the x-axis).

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Definitions:

KOH

KOH, potassium hydroxide, is a strong alkali used in industry and as a reagent in the laboratory, especially in saponification reactions.

Lithium Hydroxide

A chemical compound with the formula LiOH, used primarily as a precursor in the production of lithium greases and batteries.

Strong Base

A substance that has a high capacity to accept protons (H+) and is completely or nearly completely ionized in aqueous solution.

Weak Base

A chemical species that partially accepts protons in solution, leading to an increase in the pH of the solution.