Question

What is the inheritance pattern for Y-linked Inheritance?

1) Autosomal recessive
2) Autosomal dominant
3) X-linked recessive
4) Y-linked

Answer 1

The inheritance pattern for Y-linked inheritance is specific to male-to-male transmission, as only males have Y chromosomes. These traits are passed directly from father to son, with no daughters being affected.

Step-by-step explanation:

The inheritance pattern for Y-linked inheritance is specifically passed from father to son and does not follow any of the listed patterns such as autosomal recessive, autosomal dominant, or X-linked recessive. Since genes on the Y chromosome are only possessed by males and are transmitted only from father to son, the correct answer is option 4, Y-linked.

It is important to note that with Y-linked inheritance, any male who has a Y-linked trait will pass it down to all of his sons, but no daughters. This is because daughters receive an X chromosome from their father and not the Y chromosome that carries the trait.

The distinction between Y-linked inheritance and the other types of inheritance such as autosomal and X-linked is critical because the Y chromosome contains genes that are pertinent only to male development and reproduction. Therefore, the traits governed by these genes will solely affect males and display a pattern of father-to-son transmission, without skipping generations.