MCAT Question of the Day
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    Q:

    		 Gene copying and shuffling occurs during evolution. This process is likely to be beneficial to a species for which of the following reasons?
    		 

    A

    		 Gene copying and shuffling provides efficient dissemination of genes to gametes, resulting in fewer mutations in offspring and preserving proper gene functions.

    B

    		 Gene copying and shuffling is likely to move a gene into a mutation-resistant zone of the genome and hence the gene is safer from mutation than it was before.

    C

    		 Gene copying and shuffling produces paralogs. If one of the genes becomes mutated, there is still another copy that remains functional. Evolution of the mutated gene can thus provide new function without loss of function of the original gene, increasing the likelihood that mutants with new function will survive.

    D

    		 Gene copying and shuffling allows genes to be read in novel ways, producing novel proteins and function.



    Evolution |
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