Question

3. Глухота наследуется по аутосомно–рецессивному типу. Частота заболевания колеблется в разных странах. Для европейских стран она приблизительно равна 2:10000. Определите возможное число гетерозиготных по глухоте людей в районе, который включает в себя 8000000 жителей.

Answer 1

Ответ:

8 000 000 / 10 000 * 2 = 1600 это возможные глухонемые люди, согласно второму закону Менделя признак проявляется в соотношении 3:1 следовательно 1 : 2 :1 по генотипу, следовательно гетерозиготных будет приблизительно 1600 * 2 = 3200 человек.

Answer 2

Inheritance of Deafness

Deafness can be inherited in an autosomal recessive manner. This means that both copies of the gene associated with deafness need to be mutated in order for an individual to be affected by the condition. If only one copy of the gene is mutated, the person is considered a carrier and does not typically experience hearing loss.

Frequency of Deafness in European Countries

The frequency of deafness can vary in different countries. For European countries, the approximate frequency of deafness is 2 in 10,000 individuals This means that out of every 10,000 people, around 2 are affected by deafness.

Calculating the Number of Heterozygous Individuals

To determine the possible number of heterozygous individuals for deafness in a population of 8,000,000 people, we can use the frequency of deafness in European countries.

Given that the frequency of deafness is 2 in 10,000 individuals, we can calculate the number of affected individuals in the population as follows:

(2/10,000) * 8,000,000 = 1,600

Therefore, it is estimated that there could be approximately 1,600 heterozygous individuals for deafness in the population of 8,000,000 people.

Please note that this is an estimation based on the given frequency and population size, and the actual number may vary.

I hope this information is helpful! Let me know if you have any further questions.