Based on these descriptions, which man is impotent? jacob has a low sperm count. reuben has a blocked vas deferens. leon is unable to sustain an erection. troy’s testes have not descended into the scrotum.

Asegment id dna that is artificially created from two or more organism through use of dna enzymes in a laboratory is called a segment of dna that is artificially created from two or more organisms through use of dna enzymes in a laboratory is called