Translation
The very first amino acid added to a polypeptide is ____
Methionine
The expected expression of the lac operon
Actively expressed when lactose is present and no glucose is present
Transversion mutations
What is changes a pyrimidine to purine or purine to pyrimidine
A change in the number of chromosomes in a genome
what is Genome mutation
Lac operon is an example of a_____gene
what is Polycestronic
The anticodon is located on the ___
tRNA
Operons are found only in ____
What is Prokayotes
This type of mutation changes the nucleotide sequence but not the amino acid sequence
what is silent mutation
Failure of chromosomes to separate during anaphase
what is nondisjunction
Eukaryotes can have multiple proteins from the same gene thanks to
what is alternative splicing
The very first tRNA binds to the ___ site
P site
If Lac I in a cell is nonfunctional if that cell is grown in glucose-rich minimum medium what is the expected level of Lac Z?
Low/Basal
These mutations are most detrimental to a protein
Frameshift, nonsense near the N terminal of the protein
Familial down syndrome is caused by ___
Unbalanced Translocation of a section of chromosome 21 being attached to chromosome 14
Histones are modified by this to create more gene expression
what is acetylation
The second tRNA binds first to the___ site
A site
What combination of Protein and small effector molecule turns on the transcription of the lac operon
Activator+Inducer, Repressor+inducer
This kind of mutation can be passed on to the next generation
What is germ mutation
Inversion is an example of _____ mutation
What is chromosomal
Eukaryotic mRNA must have ___,___,and____ before it can be translated
what is poly a tail, CAP, and alternative splicing
Antisense RNA does what
Regulates translation!
If the Lac operon is not expressed at basal level
The lac operon will never be expressed
If you have a nonsense mutation in the start codon of a gene
What is you will never get translation of the gene.
The genome of a male calico cat
what is 47XXY
DNA is methylated at ___
what is CPG islands