Question

Причинами врожденной слепоты человека могут быть аномалии хрусталика и роговицы глаза. Это – рецессивные признаки, которые наследуются независимо. Выясните вероятность (в %) рождения больных детей у родителей, которые являются дигетерозиготами за этими признаками

Answer 1

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Answer 2

Understanding the Inherited Traits

When considering the probability of having affected offspring, it's important to understand the inheritance pattern of the specific traits in question. In this case, we are looking at the possibility of inheriting congenital blindness due to anomalies in the lens and cornea of the eye. These anomalies are considered to be recessive traits and are inherited independently.

Probability Calculation

When both parents are heterozygous for these traits, the probability of having an affected child can be calculated using the principles of Punnett squares and probability theory. In this scenario, both parents carry one normal allele and one allele for the recessive trait.

Probability of Affected Offspring

The probability of having an affected child when both parents are heterozygous for these traits can be calculated using the principles of Mendelian genetics. According to the principles of Mendelian inheritance, the probability of having an affected child is 25%.

Conclusion

When both parents are heterozygous for the anomalies in the lens and cornea of the eye, the probability of having an affected child is 25%. This calculation is based on the principles of Mendelian genetics and the independent inheritance of these recessive traits