Answer to Question #126881 in Genetics for ALEENA RAJU

Question

Explain how recessive traits or illnesses can result from a loss of function, whereas dominant traits can result from a gain of function.

Answer 1

The correct answer is:

Recessive mutations remove a part of or all the gene from the chromosome hence disrupting expression of the gene or altering the structure of the encoded protein, which thereafter leads to recessive traits due to altering of its function. Dominant mutations increases the activity of a given gene product by conferring a new activity on the gene product leading to inappropriate spatial and temporal expression.