A recessive mutant is one which

  • A
    Is not expressed
  • B
    Is rarely expressed
  • C
    Is expressed only in homozygous and hemixygous state
  • D
    Is expresesed only in heterozygous state.

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                $RT$      $Rt$     $rT$      $rt$

$RT$             $1$        $2$       $3$       $4$

$Rt$              $5$        $6$       $7$       $8$

$rT$              $9$        $10$     $11$     $12$

$rt$               $13$       $14$     $15$    $16$

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