So, instead of a fist fight there was more of a wrestle to keep each other from that gun.
There isn't any of Martin's DNA on the weapon or Zimmerman, or any Zimmerman in Martins fingernails, making at least a part of how Zimmerman explains his struggle with Martin over that gun an obvious a lie.
There is Martin DNA in Zimmerman fingernails apparently. He keeps lying about specific aspects - because he actually has intimate working knowledge of the Stand Your Ground law and manipulated the facts.
.. Mr. Gorgone said he found none of Trayvon's DNA on Zimmerman's 9mm Kel-Tec pistol. Zimmerman has asserted, to police and to a friend, that Trayvon had grabbed for the gun before Zimmerman fired.
Mark Osterman, Zimmerman's best friend and the author of a book defending him, testified Tuesday that Zimmerman told him on the night of the shooting that Trayvon briefly grabbed his gun as the two wrestled on the ground. Mr. Osterman said Zimmerman said to him, "somehow I broke his grip on the gun when guy grabbed between the grip and the hammer."
Gorgone also testified he found none of Zimmerman's DNA under Trayvon Martin's fingernails. Zimmerman has said Travyon was beating him badly before he fired into the teenager's chest. Nor did he find anything "that matched [Zimmerman]" on Trayvon's hoodie, including on either of the lower sleeves of the sweatshirt, he said.
Defense attorneys, for their part, got Gorgone to acknowledge that environmental conditions such as humidity or rain could have washed surfaces clean of DNA.
"Environmental factors, whether it's raining, or there's heat and humidity, all those factors can degrade DNA," said Gorgone. "It chops it up into pieces."
Heavy rain was falling Feb. 26, 2012, when Zimmerman, a neighborhood watch captain, spotted Trayvon, called 911 to report a suspicious person, and then followed him when the teenager ducked between a couple of houses in the Retreat at Twin Lakes gated neighborhood in Sanford, a city of 53,000 along Florida's St. John's River. After a brief fight, Zimmerman fired into Trayvon's chest at close range, killing him. "Oh gosh, you got me," Trayvon said, according to Zimmerman's statements to police.
Eyewitness testimony has been inconsistent concerning whether Trayvon was on top of Zimmerman, hitting him, or whether Zimmerman had the upper hand when the shot rang out.
The forensic testimony came after Judge Debra Nelson earlier Wednesday allowed testimony by two professors at Seminole County College, where Zimmerman studied criminal justice in 2010 and 2011. Though Zimmerman told Fox News' Sean Hannity last year that he had never heard of Florida's so-called "Stand Your Ground" self-defense law, the two professors said that law was discussed extensively in classes in which they considered Zimmerman to be a top student.
Sanford police cited the 2005 Stand Your Ground law when they declined to charge him after the shooting. During the trial, Zimmerman's lawyers have relied on a more traditional self-defense argument, saying Zimmerman, being beaten and fearing for his life, was within his rights to respond with deadly force to Trayvon's alleged attack.