499 Phil. 185
CARPIO, J.:
In view of the foregoing, the motion of the petitioner is GRANTED and the relevant individuals, namely: the petitioner, the minor child, and respondent are directed to undergo DNA paternity testing in a laboratory of their common choice within a period of thirty (30) days from receipt of the Order, and to submit the results thereof within a period of ninety (90) days from completion. The parties are further reminded of the hearing set on 24 February 2000 for the reception of other evidence in support of the petition.Petitioner filed a motion for reconsideration of the 3 February 2000 Order. He asserted that “under the present circumstances, the DNA test [he] is compelled to take would be inconclusive, irrelevant and the coercive process to obtain the requisite specimen…, unconstitutional.”
IT IS SO ORDERED.[5] (Emphasis in the original)
- Public respondent misread and misapplied the ruling in Lim vs. Court of Appeals (270 SCRA 2).
- Public respondent ruled to accept DNA test without considering the limitations on, and conditions precedent for the admissibility of DNA testing and ignoring the serious constraints affecting the reliability of the test as admitted by private respondent’s “expert” witness.
- Subject Orders lack legal and factual support, with public respondent relying on scientific findings and conclusions unfit for judicial notice and unsupported by experts in the field and scientific treatises.
- Under the present circumstances the DNA testing petitioner [is] compelled to take will be inconclusive, irrelevant and the coercive process to obtain the requisite specimen from the petitioner, unconstitutional.[7]
WHEREFORE, foregoing premises considered, the Petition is hereby DENIED DUE COURSE, and ordered dismissed, and the challenged orders of the Trial Court AFFIRMED, with costs to Petitioner.Petitioner moved for reconsideration, which the appellate court denied in its Resolution dated 23 May 2001.[9]
SO ORDERED.[8]
ART. 175. Illegitimate children may establish their illegitimate filiation in the same way and on the same evidence as legitimate children.The Rules on Evidence include provisions on pedigree. The relevant sections of Rule 130 provide:
xxx
ART. 172. The filiation of legitimate children is established by any of the following:(1) The record of birth appearing in the civil register or a final judgment; orIn the absence of the foregoing evidence, the legitimate filiation shall be proved by:
(2) An admission of legitimate filiation in a public document or a private handwritten instrument and signed by the parent concerned.(1) The open and continuous possession of the status of a legitimate child; or
(2) Any other means allowed by the Rules of Court and special laws.
SEC. 39. Act or declaration about pedigree.—The act or declaration of a person deceased, or unable to testify, in respect to the pedigree of another person related to him by birth or marriage, may be received in evidence where it occurred before the controversy, and the relationship between the two persons is shown by evidence other than such act or declaration. The word “pedigree” includes relationship, family genealogy, birth, marriage, death, the dates when and the places where these facts occurred, and the names of the relatives. It embraces also facts of family history intimately connected with pedigree.This Court’s rulings further specify what incriminating acts are acceptable as evidence to establish filiation. In Pe Lim v. CA,[20] a case petitioner often cites, we stated that the issue of paternity still has to be resolved by such conventional evidence as the relevant incriminating verbal and written acts by the putative father. Under Article 278 of the New Civil Code, voluntary recognition by a parent shall be made in the record of birth, a will, a statement before a court of record, or in any authentic writing. To be effective, the claim of filiation must be made by the putative father himself and the writing must be the writing of the putative father.[21] A notarial agreement to support a child whose filiation is admitted by the putative father was considered acceptable evidence.[22] Letters to the mother vowing to be a good father to the child and pictures of the putative father cuddling the child on various occasions, together with the certificate of live birth, proved filiation.[23] However, a student permanent record, a written consent to a father’s operation, or a marriage contract where the putative father gave consent, cannot be taken as authentic writing.[24] Standing alone, neither a certificate of baptism[25] nor family pictures[26] are sufficient to establish filiation.
SEC. 40. Family reputation or tradition regarding pedigree.—The reputation or tradition existing in a family previous to the controversy, in respect to the pedigree of any one of its members, may be received in evidence if the witness testifying thereon be also a member of the family, either by consanguinity or affinity. Entries in family bibles or other family books or charts, engraving on rings, family portraits and the like, may be received as evidence of pedigree.
Everyone is born with a distinct genetic blueprint called DNA (deoxyribonucleic acid). It is exclusive to an individual (except in the rare occurrence of identical twins that share a single, fertilized egg), and DNA is unchanging throughout life. Being a component of every cell in the human body, the DNA of an individual’s blood is the very DNA in his or her skin cells, hair follicles, muscles, semen, samples from buccal swabs, saliva, or other body parts.Although the term “DNA testing” was mentioned in the 1995 case of People v. Teehankee, Jr.,[33] it was only in the 2001 case of Tijing v. Court of Appeals[34] that more than a passing mention was given to DNA analysis. In Tijing, we issued a writ of habeas corpus against respondent who abducted petitioners’ youngest son. Testimonial and documentary evidence and physical resemblance were used to establish parentage. However, we observed that:
The chemical structure of DNA has four bases. They are known as A (adenine), G (guanine), C (cystosine) and T (thymine). The order in which the four bases appear in an individual’s DNA determines his or her physical makeup. And since DNA is a double-stranded molecule, it is composed of two specific paired bases, A-T or T-A and G-C or C-G. These are called “genes.”
Every gene has a certain number of the above base pairs distributed in a particular sequence. This gives a person his or her genetic code. Somewhere in the DNA framework, nonetheless, are sections that differ. They are known as “polymorphic loci,” which are the areas analyzed in DNA typing (profiling, tests, fingerprinting, or analysis/DNA fingerprinting/genetic tests or fingerprinting). In other words, DNA typing simply means determining the “polymorphic loci.”
How is DNA typing performed? From a DNA sample obtained or extracted, a molecular biologist may proceed to analyze it in several ways. There are five (5) techniques to conduct DNA typing. They are: the RFLP (restriction fragment length polymorphism); “reverse dot blot” or HLA DQ a/Pm loci which was used in 287 cases that were admitted as evidence by 37 courts in the U.S. as of November 1994; mtDNA process; VNTR (variable number tandem repeats); and the most recent which is known as the PCR-([polymerase] chain reaction) based STR (short tandem repeats) method which, as of 1996, was availed of by most forensic laboratories in the world. PCR is the process of replicating or copying DNA in an evidence sample a million times through repeated cycling of a reaction involving the so-called DNA polymerize enzyme. STR, on the other hand, takes measurements in 13 separate places and can match two (2) samples with a reported theoretical error rate of less than one (1) in a trillion.
Just like in fingerprint analysis, in DNA typing, “matches” are determined. To illustrate, when DNA or fingerprint tests are done to identify a suspect in a criminal case, the evidence collected from the crime scene is compared with the “known” print. If a substantial amount of the identifying features are the same, the DNA or fingerprint is deemed to be a match. But then, even if only one feature of the DNA or fingerprint is different, it is deemed not to have come from the suspect.
As earlier stated, certain regions of human DNA show variations between people. In each of these regions, a person possesses two genetic types called “allele”, one inherited from each parent. In [a] paternity test, the forensic scientist looks at a number of these variable regions in an individual to produce a DNA profile. Comparing next the DNA profiles of the mother and child, it is possible to determine which half of the child’s DNA was inherited from the mother. The other half must have been inherited from the biological father. The alleged father’s profile is then examined to ascertain whether he has the DNA types in his profile, which match the paternal types in the child. If the man’s DNA types do not match that of the child, the man is excluded as the father. If the DNA types match, then he is not excluded as the father.[32] (Emphasis in the original)
Parentage will still be resolved using conventional methods unless we adopt the modern and scientific ways available. Fortunately, we have now the facility and expertise in using DNA test for identification and parentage testing. The University of the Philippines Natural Science Research Institute (UP-NSRI) DNA Analysis Laboratory has now the capability to conduct DNA typing using short tandem repeat (STR) analysis. xxx For it was said, that courts should apply the results of science when completely obtained in aid of situations presented, since to reject said result is to deny progress. Though it is not necessary in this case to resort to DNA testing, in [the] future it would be useful to all concerned in the prompt resolution of parentage and identity issues.Admissibility of
In assessing the probative value of DNA evidence, therefore, courts should consider, among other things, the following data: how the samples were collected, how they were handled, the possibility of contamination of the samples, the procedure followed in analyzing the samples, whether the proper standards and procedures were followed in conducting the tests, and the qualification of the analyst who conducted the tests.[37]Vallejo discussed the probative value, not admissibility, of DNA evidence. By 2002, there was no longer any question on the validity of the use of DNA analysis as evidence. The Court moved from the issue of according “official recognition” to DNA analysis as evidence to the issue of observance of procedures in conducting DNA analysis.
Just when a scientific principle or discovery crosses the line between the experimental and demonstrable stages is difficult to define. Somewhere in this twilight zone the evidential force of the principle must be recognized, and while courts will go a long way in admitting expert testimony deduced from a well recognized scientific principle or discovery, the thing from which the deduction is made must be sufficiently established to have gained general acceptance in the particular field in which it belongs.In 1989, State v. Schwartz[43] modified the Frye standard. Schwartz was charged with stabbing and murder. Bloodstained articles and blood samples of the accused and the victim were submitted for DNA testing to a government facility and a private facility. The prosecution introduced the private testing facility’s results over Schwartz’s objection. One of the issues brought before the state Supreme Court included the admissibility of DNA test results in a criminal proceeding. The state Supreme Court concluded that:
While we agree with the trial court that forensic DNA typing has gained general acceptance in the scientific community, we hold that admissibility of specific test results in a particular case hinges on the laboratory’s compliance with appropriate standards and controls, and the availability of their testing data and results.[44]In 1993, Daubert v. Merrell Dow Pharmaceuticals, Inc.[45] further modified the Frye-Schwartz standard. Daubert was a product liability case where both the trial and appellate courts denied the admissibility of an expert’s testimony because it failed to meet the Frye standard of “general acceptance.” The United States Supreme Court ruled that in federal trials, the Federal Rules of Evidence have superseded the Frye standard. Rule 401 defines relevant evidence, while Rule 402 provides the foundation for admissibility of evidence. Thus:
Rule 401. “Relevant evidence” is defined as that which has any “tendency to make the existence of any fact that is of consequence to the determination of the action more probable or less probable than it would be without the evidence.Rule 702 of the Federal Rules of Evidence governing expert testimony provides:
Rule 402. All relevant evidence is admissible, except as otherwise provided by the Constitution of the United States, by Act of Congress, by these rules, or by other rules prescribed by the Supreme Court pursuant to statutory authority. Evidence which is not relevant is not admissible.
If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise.Daubert cautions that departure from the Frye standard of general acceptance does not mean that the Federal Rules do not place limits on the admissibility of scientific evidence. Rather, the judge must ensure that the testimony’s reasoning or method is scientifically valid and is relevant to the issue. Admissibility would depend on factors such as (1) whether the theory or technique can be or has been tested; (2) whether the theory or technique has been subjected to peer review and publication; (3) the known or potential rate of error; (4) the existence and maintenance of standards controlling the technique’s operation; and (5) whether the theory or technique is generally accepted in the scientific community.
If scientific, technical or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise, if (1) the testimony is based upon sufficient facts or data, (2) the testimony is the product of reliable principles and methods, and (3) the witness has applied the principles and methods reliably to the facts of the case.We now determine the applicability in this jurisdiction of these American cases. Obviously, neither the Frye-Schwartz standard nor the Daubert-Kumho standard is controlling in the Philippines.[47] At best, American jurisprudence merely has a persuasive effect on our decisions. Here, evidence is admissible when it is relevant to the fact in issue and is not otherwise excluded by statute or the Rules of Court.[48] Evidence is relevant when it has such a relation to the fact in issue as to induce belief in its existence or non-existence.[49] Section 49 of Rule 130, which governs the admissibility of expert testimony, provides as follows:
The opinion of a witness on a matter requiring special knowledge, skill, experience or training which he is shown to possess may be received in evidence.This Rule does not pose any legal obstacle to the admissibility of DNA analysis as evidence. Indeed, even evidence on collateral matters is allowed “when it tends in any reasonable degree to establish the probability or improbability of the fact in issue.”[50]
In assessing the probative value of DNA evidence, therefore, courts should consider, among other things, the following data: how the samples were collected, how they were handled, the possibility of contamination of the samples, the procedure followed in analyzing the samples, whether the proper standards and procedures were followed in conducting the tests, and the qualification of the analyst who conducted the tests.[51]We also repeat the trial court’s explanation of DNA analysis used in paternity cases:
In [a] paternity test, the forensic scientist looks at a number of these variable regions in an individual to produce a DNA profile. Comparing next the DNA profiles of the mother and child, it is possible to determine which half of the child’s DNA was inherited from the mother. The other half must have been inherited from the biological father. The alleged father’s profile is then examined to ascertain whether he has the DNA types in his profile, which match the paternal types in the child. If the man’s DNA types do not match that of the child, the man is excluded as the father. If the DNA types match, then he is not excluded as the father.[52]It is not enough to state that the child’s DNA profile matches that of the putative father. A complete match between the DNA profile of the child and the DNA profile of the putative father does not necessarily establish paternity. For this reason, following the highest standard adopted in an American jurisdiction,[53] trial courts should require at least 99.9% as a minimum value of the Probability of Paternity (“W”) prior to a paternity inclusion. W is a numerical estimate for the likelihood of paternity of a putative father compared to the probability of a random match of two unrelated individuals. An appropriate reference population database, such as the Philippine population database, is required to compute for W. Due to the probabilistic nature of paternity inclusions, W will never equal to 100%. However, the accuracy of W estimates is higher when the putative father, mother and child are subjected to DNA analysis compared to those conducted between the putative father and child alone.[54]
Obtaining DNA samples from an accused in a criminal case or from the respondent in a paternity case, contrary to the belief of respondent in this action, will not violate the right against self-incrimination. This privilege applies only to evidence that is “communicative” in essence taken under duress (People vs. Olvis, 154 SCRA 513, 1987). The Supreme Court has ruled that the right against self-incrimination is just a prohibition on the use of physical or moral compulsion to extort communication (testimonial evidence) from a defendant, not an exclusion of evidence taken from his body when it may be material. As such, a defendant can be required to submit to a test to extract virus from his body (as cited in People vs. Olvis, Supra); the substance emitting from the body of the accused was received as evidence for acts of lasciviousness (US vs. Tan Teng, 23 Phil. 145); morphine forced out of the mouth was received as proof (US vs. Ong Siu Hong, 36 Phil. 735); an order by the judge for the witness to put on pair of pants for size was allowed (People vs. Otadora, 86 Phil. 244); and the court can compel a woman accused of adultery to submit for pregnancy test (Villaflor vs. Summers, 41 Phil. 62), since the gist of the privilege is the restriction on “testimonial compulsion.”[56]The policy of the Family Code to liberalize the rule on the investigation of the paternity and filiation of children, especially of illegitimate children, is without prejudice to the right of the putative parent to claim his or her own defenses.[57] Where the evidence to aid this investigation is obtainable through the facilities of modern science and technology, such evidence should be considered subject to the limits established by the law, rules, and jurisprudence.