Having 20% cholesterol in a membrane would reduce the fluidity.
Explanation:
At high temperatures, cholesterol <em>s</em><em>t</em><em>a</em><em>b</em><em>i</em><em>l</em><em>i</em><em>z</em><em>e</em><em>s</em> the membrane and increases the melting point.
The genetic pattern demonstrated here is pleiotropy. Pleiotropy occurs when a gene or allele controls more than a single trait, the gene for red-stripe also controls the size of the reptiles.
