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Dna Timeline Assignment For Childhood

Evolution is a scientific fact. - see Not Just a Theory

“Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how and why evolution occurs. An organism inherits features (called traits) from its parents through genes. Changes (called mutations) in these genes can produce a new trait in the offspring of an organism. If a new trait makes these offspring better suited to their environment, they will be more successful at surviving and reproducing. This process is called natural selection, and it causes useful traits to become more common. Over many generations, a population can acquire so many new traits that it becomes a new species.” - wikipedia

Charles Darwin’s classic work, “Origin of the Species”, 1859, forms the basis of our modern understanding of species evolution. Fundamental to Darwin’s work is the mechanism of change, natural selection. While evolution is no longer seriously questioned the process by which it occurs, natural selection, continues to be questioned. Two of the best known alternative concepts for the mechanism of evolution, though both are now largely discredited, are the pre-Darwin Jean-Baptiste Lamarck’s “acquired characteristics” - Lamarckism and Ernst Haeckel’s recapitulation theory.

Eventually, “… the union of traditional Darwinian evolution with subsequent discoveries in classical and molecular genetics termed the modern evolutionary synthesis, supported natural selection as the single primary explanation for adaptive evolution.

Thrown into the mix are political and social ideologies that have often sought to impose theories and actions on forced interpretations of evolution and evolutionary mechanisms, often with disastrous and tragic consequences. Two of the most well known are Lysenkoism in the former Soviet Union and the Eugenics movement in Europe and the United States. Eugenics, largely discredited by the 1930’s, has given us various actions from the U.S. Immigration Restrictions of the 1920’s to Action T4 in Nazi Germany.

Of course the most recent manifestation in the United States has been the controversy over Intelligent Design(ID). This movement has deep roots in American culture and draws on hypotheses such as orthogenesis and Lamarckism.

While controversies between ideologies will continue, the actual science leading to, and refining, our modern understanding of adaptive evolution in general and DNA in particular looks back to a humble setting with the pea hybridizing experiments of Gregor Mendel.

Ronald Cotton

Time Served: 10 years

Ronald Cotton was exonerated in 1995, after spending over 10 years in prison for crimes he did not commit. His convictions were based largely on an eyewitness misidentification made by one of the victims, Jennifer Thompson-Cannino. Cotton and Thompson-Cannino are now good friends and leading advocates for eyewitness identification reform.

In July 1984, an assailant broke into Jennifer Thompson-Cannino’s apartment and sexually assaulted her; later that night, the assailant broke into another apartment and sexually assaulted a second woman. Thompson-Cannino, then a 22-year-old college student, made every effort to study the perpetrator’s face while he was assaulting her. As she says on 60 Minutes, “I was just trying to pay attention to a detail, so that if I survived…I’d be able to help the police catch him.”

Investigation and Trial

Thompson-Cannino first chose Ronald Cotton as her attacker in a photo lineup. Soon after, she chose him again in a live lineup – she was 100 percent sure she had the right man. The evidence at trial included a flashlight found in Cotton’s home that resembled one used by the assailant and rubber from Cotton’s shoe that was consistent with rubber found at one of the crime scenes, but overwhelmingly the evidence rested on Thompson-Cannino’s identification.

In January 1985, Cotton was convicted by a jury of one count of rape and one count of burglary. In a second trial, in November 1987, Cotton was convicted of both rapes and two counts of burglary. He was sentenced to life in prison plus fifty-four years.

Post-Conviction Investigation

Cotton was unsuccessful overturning his conviction in several appeals. But in the spring of 1995, his case was given a major break: the Burlington Police Department turned over all evidence, which included the assailant’s semen for DNA testing, to the defense.

The samples from one victim were tested and showed no match to Cotton. At the defense’s request, the results were sent to the State Bureau of Investigation’s DNA database and the database showed a match with the convict who had earlier confessed to the crime to a fellow inmate in prison.

When the DNA test results were reported in May 1995, the district attorney and the defense motioned to dismiss all charges. On June 30, 1995, Cotton was officially cleared of all charges and released from prison. In July 1995, the governor of North Carolina officially pardoned Cotton. Cotton had served 10.5 years in prison.

Life after Exoneration

Soon after his release, Cotton got a job in the warehouse of LabCorp, the company that tested the DNA evidence that proved his innocence. He also married, had a child, and bought a piece of land to live on. He received $110,000 from the state for his wrongful conviction.

Thompson-Cannino and Cotton met for the first time after his exoneration. Thompson-Cannino states, “I just started to sob. I looked at him and I said, ‘If I spent every minute of every hour of every day for the rest of my life telling you that I’m sorry, can you ever forgive me?’ He did the one thing that I never imagined. He started to cry and he said, ‘Jennifer, I forgave you years ago.’”

Cotton and Thompson-Cannino are now good friends. They travel around the country working to spread the word about wrongful convictions and reforms – especially for eyewitness identification procedures – that can prevent future injustice.

State: North Carolina

Charge: Rape, Burglary

Conviction: Rape (2 cts.), Burglary (2 cts.)

Sentence: Life + 50 years

Incident Date: 06/29/84

Conviction Date: 01/16/85

Exoneration Date: 06/30/95

Served: 10 years

Race of Defendant: African American

Race of Victim: Caucasian

Status: Exonerated by DNA

Contributing Causes of Conviction: Eyewitness Misidentification, Unvalidated or Improper Forensic Science

Death Penalty Case: no

Accused Plead Guilty: No

Real Perpetrator Convicted of Subsequent Crime: No

Type of Forensic Science Problem: Other

Compensation: State Statute

Innocence Project Involved: Yes

The Alternative Perpetrator Identified: Yes

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