Question

Give an exmppe of any one autosomal recessive trait in humans

Answer 1

Dear student,           
​Please find below the solution to the asked query   

The autosomal recessive disorder occurs when both the copies (alleles) of a gene are defective. E.g. Thalassemia is an autosomal recessive disorder. 

Thalassemia occurs by the mutation in the genes that make haemoglobin present in the red blood cells. It is an inherited autosomal recessive blood disorder . It leads to the weakening and destruction of red blood cells. It involves formation of abnormal form of haemoglobin, the protein in red blood cells that carries oxygen.
Let us take  both the parents as carriers for this disease. The genotype of carrier parents will be Aa and Aa. The cross between them can be depicted as:

Parents                  Aa                            x                      Aa          
                         (Carrier man)                            (carrier woman)

Gametes           A, a                                                     A,  a

Progeny                     AA              Aa             Aa            aa
                          (Unaffected)    (Carrier)    (Carrier)  (Affected)

Hence, if both the parents are carriers for thalessemia, then 25% new born children will be unaffected,   50% will be carriers and 25% will be affected. 

Hope this information will clear your doubts about the topic.   
​If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.  
       

Regards                                 .


I hope you understand it ☺️☺️☺️☺️.


Mark me as brainlist ☺️☺️☺️

Answer 2

Well,they are genetic diseases like Haemophelia,colour blindness,etc

Hope it was helpful hit a thanks!