SDHB pathogenic variant
~ Associated with malignant abdominal paraganglioma.
MEN type 2
~ Associated with medullary thyroid cancer, RET Proto-Oncogene pathogenic
variants, and pheochromocytoma.
SDHD
~ Imprinted maternally, with the region of the DNA inherited from the mother
being si...
✓~ Thymine, Guanine, Adenine, and Cytosine are the four nitrogenous bases that
form the triplet DNA code.
Codon
✓~ A sequence of three nucleotides that code for a specific amino acid.
Allele
✓~ One version of a gene at a given locus.
Intron
✓~ Non-coding segment of DNA absent from the mature messenger RNA.
Exon
, ✓~ Coding segment of DNA present in mature messenger RNA.
Gene
✓~ A hereditary unit that occupies a specific position within the genome.
SNP
✓~ A benign nucleotide alteration seen in > 1% of the given population.
Microsatellite
✓~ Repetitive segment 2 to 4 nucleotides long between or within a gene.
Missense mutation
✓~ A single base pair substitution that results in a different amino acid at that
position.
Nonsense mutation
✓~ A single base pair substitution that results in a premature stop codon.
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