Question

69. A parent having autosomal dominant disease then
what will be the probability of diseased offspring
(irrespective of sex of the child) :-
(1) 90%
(2) 10%
(3) 75%
(4) 50%​

Answer 1

Answer:

I think it should be 50%

Because for the generation of new individuals meiosis division takes place between sex cells and not autosomes. Autosomes only possess mitotic division for the developement and growth of the individual (here parent having autosomal disease) .

there is equal chances for that the disease will be transferred to progeny or the mutatic gene will be tranferred to progeny because for the developement of progeny sex cells will fuse and not autosomes while the disease is autosomal.

(In human 23 pairs of chromosomes are present from which 22 are same in both male and female called autosomes and the 1 pair is different called sex cells.)

If you find here any mistake then ask for that.

Answer 2

50 percent chances

Step by step explanation:

A person with autosomal dominant disorder has one mutant gene and one normal gene. Even a single abnormal gene received from any one parent can cause a defect in autosomal dominant disorders.

During the division of autosomes mitotic division takes place. Hence when their is division of cells it produces a replica with an equal number of chromosomes in each progeny cells resulting in deploid cells

Therefore during autosomal dominant disorder there are 50 percent of chances of transmitting the disorder to their young ones.

Examples of autosomal dominant disorders are Marfan syndrome, polycyctic kidney disease etc

Learn more about autosomal dominant and recessive disorder here:

https://brainly.in/question/9964724

Learn more about difference between meiosis and mitosis here:

brainly.in/question/3220654