Bioinformatics Exam I Review

37 cards   |   Total Attempts: 182
  

Cards In This Set

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Missense vs. nonsense mutation
An amino acid is replaced by another AA vs. a stop codon
Coalescence
All lines of descent eventually converge on a signle copy of the gene if we trace back a population far enough
Autosomes
Non-sex chromosomes
Orthologs
Type of homologl; different species with common ancestor; single gene divergence
Random drift
The process by which random mutations are spread throughout the population.
u fix=Nu x pfix = u
where u is the prob a new mut. arising at each site in a DNA seq in a generation
Polymorphic
Many proteins from different individuals have alternative alleles, meaning their loci are _____. Protein loci can be this as well as DNA loci.
Transposon
DNA sequence that can change its position within the genome, sometimes creating or reversing mutations and altering the cell's genome size.
Translocation
Caused by the rearrangement of parts between nonhomologous chromosomes
Transversion
Substitution of a purine for a pyrimidine or vice versa. Tends to have drastic consequences.
NCBI GenBank
Archival nucleotide sequences. Has genes, mRNA, rRNA, etc. Raw data, may contain mistakes
NCBI RefSeq
Curated collection of DNA. RNA, and prot. sequences. Provides 1 example of each natural biological mc for major organisms
UniProt
Database of protein sequences; protein-centric info about gene product
Entrez
Search engine for NCBI website; system can provide views of gene and protein sequences, chromos. maps
NCBI databases
Conserved domains, Gene, OMIM (human genetic disorders), Structure
Signal peptide
Directs the secretion of retinol binding protein. After secretion, its cleaved to form the mature protein