FAQs
A null value is the term used when a DNA laboratory is unable to determine a value for a short tandem repeat (STR) marker on the Y-chromosome. A null value may be caused by missing genetic material, or a single-nucleotide polymorphism (SNP) near the location of the marker.
What does null name mean? ›
It means that there is no value associated with name . You can also think of it as the absence of data or simply no data.
What nationality is the name Null? ›
Jewish (Ashkenazic): variant of Noll 4. German (also Nüll): variant of Noll and Nuelle 2.
What does NN mean in ancestry? ›
Nomen nescio (pronounced [ˈnoːmɛn ˈnɛskɪ. oː]), abbreviated to N.N., is used to signify an anonymous or unnamed person. From Latin nomen – "name", and nescio – "I do not know", it literally means "I do not know the name".
What does a null indicate? ›
Answer: Null indicates there is no value within a database field for a given record. It does not mean zero because zero is a value. Blank indicates there is a value within a database but the field is blank.
What does null mean in status? ›
Null means no status yet.
Is NULL a real name? ›
The Null family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Null families were found in USA in 1880. In 1840 there were 36 Null families living in Pennsylvania. This was about 26% of all the recorded Null's in USA.
Does NULL mean yes or no? ›
Semantically: Very difficult. In most cases, NULL or nil means "no value" or "not applicable". Sometimes (like, when passed to a routine as an argument) it means "no explicit value". In SQL, it often means "not known".
Does NULL mean empty? ›
The concept of NULL and empty string often creates confusion since many people think NULL is the same as a MySQL empty string. However, this is not the case. An empty string is a string instance of zero length. However, a NULL has no value at all.
Is Null an Irish name? ›
The surname “Null”, if we are to believe the Internet, has its roots in Gaelic. Specifically, it is from the name “Mac an Ultaigh”, but this doesn't tell us why some people have this computer-migraine-inducing surname, only where it (vaguely) comes from.
Null values (reported as 0) occur when the lab gets no read for an STR marker value. This is not the same thing as a poor-quality result. A null value is obtained from a sample that produces good-quality results from other markers.
Who changed his name to null? ›
A US man changed his name and unlocked a technical loophole which allows him to avoid travel charges. According to stuff.co.nz, the guy's name is Raven Felix Null, 24, and he has enjoyed seven free nights at seven different hotels and free-of-charge car rental after changing his surname to Null.
What does it mean when a gene is null? ›
(nul uh-LEEL) A DNA sequence variation that results in no gene product. The gene product (RNA or protein) of a null allele is either absent or not detectable at the molecular level or does not function at the phenotypic level.
What does null tracking number mean? ›
If it has a null tracking number, one hasn't been assigned yet, or this type of package doesn't get a tracking number. A null (actual) delivery date/time means it hasn't been delivered yet, or the information that it has been delivered hasn't gotten into the system yet.
Does null mean cancel? ›
Null is the base of the word nullify, which means to make something invalid or to cancel something out. Definitions of null. adjective. lacking any legal or binding force. “null and void”
What causes null allele? ›
A null allele is a nonfunctional allele (a variant of a gene) caused by a genetic mutation. Such mutations can cause a complete lack of production of the associated gene product or a product that does not function properly; in either case, the allele may be considered nonfunctional.
