Sometimes dominant (usually favorable) genes are paired and sometimes recessive (usually unfavorable) genes are paired.
(dominant (usually favorable) genes; are paired; T:Sometimes) (Sometimes dominant (usually favorable) genes are paired and sometimes recessive (usually unfavorable) genes; are paired; )
dominant (usually favorable) genes Sometimes dominant (usually favorable) genes are paired and sometimes recessive (usually unfavorable) genes
are paired are paired
T:Sometimes