Richard Vega was convicted by a jury of three counts of rape. In his appeal, Vega challenges the admissibility of evidence that DNA
1
in samples of his blood matched
The victim, a native of Texas, had come to visit her ailing fifty-nine year old son in Revere and sojourned in his apartment in that city. Late in the afternoon on August 7, 1987, Debra Swasey, a woman friend of the victim’s son, turned up at the Revere apartment for a change of clothes and a shower. She was accompanied by a man who was asked to wait outside. About one-half hour after he and the woman had left the Revere apartment in a blue van, he returned and secured entrance to the apartment on the pretext of wishing to talk to the victim about her son. There ensued brutal forced vaginal and anal rapes. The victim identified the defendant as the assailant. Other facts which the jury might have found from the evidence are best left to discussion of the various points of appeal.
1.
Required finding of not guilty.
There was sufficient evidence against the defendant to take to the jury the charge of natural rape, and the defendant does not contend otherwise. The defendant does urge, however, that the evidence of unnatural, i.e., anal rape, failed under the standard formulated in
Commonwealth
v.
Latimore,
In her testimony, the victim, untutored in the niceties of legal presentation, was wont to proceed to the heart of the matter. When asked, “And after the clothing was down, ma’m, what happened,” she responded: “He raped me.” Asked to explain what the assailant had done, she said: “His penis went into my vagina.” Asked what the assailant did
The motion for a required finding of not guilty on the count of unnatural rape was rightly denied.
2.
Admissibility of DNA evidence.
During the course of investigation of the rape and preparation of the case against Vega, the Commonwealth sent swatches with samples of the defendant’s blood, rectal swabs from the victim, and samples of her clothes to Lifecodes Corporation in Valhalla, New York. Lifecodes’ assignment was to analyze those samples to see if the DNA in the blood samples taken from Vega matched the DNA in the fluid samples swabbed from the victim and taken from her garments. Witnesses from Lifecodes were permitted to testify about the DNA identifying process in theory as well as the steps taken and conclusions reached on the basis of the samples studied in this case. Four probes or bands were studied and they matched. One of
Vega’s trial occurred in late November, 1990. Earlier that year, in May, in another case,*
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a judge of the Superior Court had conducted a voir dire to determine whether the methodology as applied was accepted in the scientific community. See
Frye
v.
United States,
In the years following Vega’s trial, the Supreme Judicial Court published a trilogy of cases dealing with DNA matching evidence:
Commonwealth
v.
Curnin,
3.
Prejudice to defendant from erroneous admission of DNA matching evidence.
The conventional evidence against Vega was formidable. He had first been observed by the victim when he accompanied Swasey to the Revere apartment. When, after leaving with Swasey, he returned alone, the victim recognized the man she later identified as the defendant as the person who had earlier accompanied Swasey. From the time she first saw the defendant until he left after the rape, an hour and a half had elapsed. Her exposure to the defendant was considerable, and it was daytime. An inquisitive and observant neighbor noticed the defendant arrive first with a woman, leave with her, then reappear and leave the Revere apartment at a time interval consistent with the rape. She observed the type of van the defendant arrived and left in each time he had come. Her description of that van, gray or faded powder blue and somewhat old, matched what the victim had described as the vehicle used by the defendant when he left after the assault. Indeed, the person the neighbor had observed had said “hello” to her on his second visit. Both the victim and the neighbor independently identified the defendant from photo arrays. The victim made an in-court
In addition to this powerful web of evidence from percipient witnesses, the government offered evidence, through methods other than DNA matching, that semen recovered from the victim’s slacks and underwear was consistent with having come from the defendant. The presentation of the DNA evidence, while hardly a minor episode in the trial — it consumed a day — ended in a far less dramatic fashion than in
Commonwealth
v.
Curnin,
4. Successive sentences. On the conviction of unnatural rape, i.e., the anal penetration, the judge imposed a sentence of from nineteen and one-half to twenty years at M.C.I., Cedar Junction. For the two counts of vaginal rape, the judge imposed a sentence of the same duration, to commence “from and after” the unnatural rape sentence. The judge, however, suspended the “from and after” sentence, subject to probation for ten years.
Our discussion of the foregoing points disposes of two other matters raised by the defendant’s appeal, and we do not give them separate attention.
Judgments affirmed.
Notes
Deoxyribonucleic acid.
That case was
Commonwealth
v.
Daggett,
later reviewed at
See also the re-examination of that standard in
Daubert
v.
Merrell Dow Pharmaceuticals, Inc.,
For all that, defense counsel exhibited interest in the technology. The defense applied for, and received funds, to have an independent DNA comparison made by Cellmark Diagnostics laboratory of Germantown, Maryland. Three major players in the DNA profiling business are Lifecodes, the service used by the Commonwealth in the case before us, Cellmark, and the Federal Bureau of Investigation. Hoeffel, Note, “The Dark Side of DNA Profiling: Unreliable Scientific Evidence Meets the Defendant,” 42 Stan. L. Rev. 465, 471 (1990). Cellmark’s report was not offered by the defense, and a motion to have the defense release the Cellmark report to the prosecution was denied.
There is appended to the Cumin opinion an appendix (at 227-231) describing in some detail the theory, scientific underpinning, and method of DNA comparison analysis.
The Commonwealth may not derive help from the more favored “interim ceiling principle” method of probability calculation, as opposed to the “product rule” method disdained in Curnin, Lanigan, and Daggett. The interim ceiling principle was not applied by Lifecodes to its data until after the trial.
