Based on phenotypes, how many Caucasians in a population of 100,000 are expected to exhibit a specific combination?

To determine how many individuals in a population of Caucasians would be expected to exhibit a specific phenotype, we typically rely on the frequency of that phenotype within this demographic group. When calculating the expected number of individuals, the frequency of the phenotype in question is multiplied by the total population size.

For some phenotypes, especially those related to blood types or specific genetic markers, researchers usually have established frequencies based on large-scale studies. If the specific combination noted in the question has a frequency of approximately 1.438% in Caucasian populations, then:

1.438% of 100,000 equals 1,438.

This calculation reveals that 1,438 individuals out of 100,000 are expected to display that specific combination based on the established frequency in the Caucasian population. This number is significant as it highlights how genetic traits and combinations can be prevalent in certain populations, and helps in understanding the distribution of phenotypes in diverse demographics.