Question

Проявляется только у мужчины и женщины,могут быть носителями. Отец и сын дальтоники,а мать нормальная.Правильно ли будет сказать,что сын унаследует от отца болезнь. Решить задачей

Answer 1

Нет, не правильно. Дальтонизм - признак, сцепленный с Х хромосомой. Если рождается больной мальчик, то он унаследует этот признак от матери, а от отца унаследует У хромосому.

Р ХдУ х ХдХ 

Г./Хд\У.../Хд\Х  (гаметы)

F = ХдХд(девочка дальтоник) + ХдХ (дев. носитель) + ХдУ( мальчик дальтоник) + ХУ(здоровый мальчик)

Answer 2

Inheritance of Color Blindness

Color blindness, also known as color vision deficiency, is a genetic condition that affects how individuals see colors. It is often associated with the X chromosome and can be inherited. Let's explore the inheritance pattern in the given scenario.

Inheritance of Color Blindness: In the case where the father and son are color blind, and the mother has normal color vision, it is important to understand the genetic basis of color blindness and the inheritance pattern.

The genes responsible for color vision are located on the X chromosome. Males have one X and one Y chromosome, while females have two X chromosomes. The gene for color vision deficiency is recessive and carried on the X chromosome.

Inheritance Pattern: - If the father is color blind (X^c Y) and the mother has normal color vision (X^CX^C), all their sons will be color blind (X^c Y) because the sons inherit the Y chromosome from the father and the X chromosome from the mother. - Daughters, on the other hand, will inherit one X chromosome from the father and one from the mother. Since the mother has normal color vision, the daughters will not be color blind carriers (X^CX^c).

Conclusion: Therefore, in the given scenario, it is correct to say that the son will inherit the color vision deficiency from the father, as the son will receive the X chromosome carrying the color blindness gene from the father and the Y chromosome from the father as well.

Task Solution:

To solve the problem, it's important to understand the genetic inheritance pattern of color blindness and apply it to the specific scenario provided. Based on the inheritance pattern, the son will inherit the color vision deficiency from the father, while the daughters will not be color blind carriers.

If you have any further questions or need additional clarification, feel free to ask!