Question

При исследовании одной человеческой популяции стало известно, что она имеет численность 5500 человек, а частоты аллелей I^A и I^B равны 25 и 45 соответственно. Помогите юным исследователям определить количество людей с группой крови 0

Answer 1

20 человек по-моему, проверьте еще разочек)

Answer 2

Determining the Number of People with Blood Type O

To determine the number of people with blood type O in a population, we can use the Hardy-Weinberg equation. The frequency of blood type O (represented by the allele i) can be calculated using the formula:

p^2 + 2pq + q^2 = 1

Where: - p^2 represents the frequency of individuals with blood type A (genotype I^A I^A) - 2pq represents the frequency of individuals with blood type AB (genotype I^A I^B) - q^2 represents the frequency of individuals with blood type O (genotype I^B I^B)

Given that the frequencies of alleles I^A and I^B are 25% and 45% respectively, we can calculate the frequency of blood type O.

Calculation

Using the given allele frequencies: - p = frequency of I^A = 25% = 0.25 - q = frequency of I^B = 45% = 0.45

We can calculate the frequency of blood type O (q^2): - q^2 = (0.45)^2 - q^2 = 0.2025

Determining the Number of People with Blood Type O

To determine the number of people with blood type O, we can use the frequency of blood type O (q^2) and the total population size.

Given that the population size is 5500, we can calculate the number of people with blood type O: - Number of people with blood type O = q^2 * Total population size - Number of people with blood type O = 0.2025 * 5500 - Number of people with blood type O ≈ 1113

Therefore, in a population of 5500 people, approximately 1113 individuals are expected to have blood type O.

(#1)