Human Genome Projects Flashcards
De novo mutations
A sequence change that is present for the first time in one family member as a result of a mutation in a germ cell of one of the parents or in the fertilized egg
Copy number variants
Sequence that is at least one kilo base in length and polymorphic. Definition may vary depending on source
DNA transposon fossils
Specific type of interspersed repeat elements that may or may not encode the proteins necessary for their own replication
Exome
The complete exon content of an organism or individual
Hierarchical shotgun sequencing approach
Approach where large, overlapping DNA fragments of known location in the human genome were subject to shotgun sequencing. The sequences of these large fragments were then used to determine the sequence of the human genome
Interspersed repeats
Specific class of repeat sequences in the human genome that range from 100-3000 base pairs. They consist of LINE, SINE and retrovirus like elements as well as DNA transposon fossils
LINES
Long interspersed nuclear elements are a specific type of interspersed repeat element that encode the proteins necessary for their own replication
IncRNA
Non protein coding transcripts longer than 200 nucleotides
Omics
The suffix omics has been added to many fields to denote studies undertaken on a large or genome wide scale
Proband
Individual being studied or reported on. A Proband is usually the first affected individual in a family who brings a genetic disorder to the attention of the medical community
Pseudogenes
Defunct genomic loci with sequence similarity to functional protein-coding genes but lacking coding potential due to the presence of disruptive mutations
Retrovirus like elements
Specific type of interspersed repeat elements that may or may not encode the proteins necessary for their own replication
Segmental duplications
Sequences > 1 kb in length that share 90-98% identity. A segmental duplication can contain interspersed repeat sequences
Shotgun sequencing
Approach where the DNA sequence of interest is shredded randomly into numerous small fragments and then individual fragments are sequenced. The sequences of these individual fragments are used to determine the sequence of the original DNA sample
SINES
Short interspersed nuclear elements are a specific type of interspersed repeat element that does not encode the proteins necessary for their own replication.