1. Selection Term Description Basal factors a. bind to enhancers Activators b. b
ID: 49509 • Letter: 1
Question
1.
Selection
Term
Description
Basal factors
a. bind to enhancers
Activators
b. bind to promoters
Coactivators
c. bind to activators
Locus control region
d. large enzymatic complex found in the cytoplasm of all eukaryotic cells that down-regulates gene expression
RISC
e. influences transcription from multiple genes linked over a large region of DNA
2.
Selection
Term
Description
Gene pool
a. The process in which rare alleles increase in frequency in a new population
Genetic drift
b. The sum total of all alleles carried in all members of a population
Founder effect
c. The proportion of all copies of a gene in a population of a specific type
Evolutionary equilibrium
d. Unpredictable, chance fluctuation in allele frequency that have a neutral effect on fitness
Allele frequency
e. a balance between a new allele and selection against that allele
Selection
Term
Description
Basal factors
a. bind to enhancers
Activators
b. bind to promoters
Coactivators
c. bind to activators
Locus control region
d. large enzymatic complex found in the cytoplasm of all eukaryotic cells that down-regulates gene expression
RISC
e. influences transcription from multiple genes linked over a large region of DNA
Explanation / Answer
1. Basal factor- influences transcription from multiple genes linked over a large region of DNA
Basal factor is term for any protein that respond to activator signal which position RNA polymerase at starting point of protein coding region resulting in transcription of genetic information from DNA followed by translation into proteins.
2. Activators- bind to enhancers
Activator is a transcription factor that increases transcription of genes. Most activators are DNA-binding proteins that bind to enhancers or promoter-proximal elements. eg, catabolite activator protein activates transcription of lac operon.
3. Coactivator- bind to activator
Coactivator is a protein that increases gene transcription by binding to the activators. It is unable to bind to DNA itself.
4. Locus control region- bind to promoter
They are DNA sequence elements that confer high-level, tissue-specific expression to stably integrated transgenes in a position-independent manner
5. RISC- large enzymatic complex found in the cytoplasm of all eukaryotic cells that down-regulates gene expression
RISC (RNA induced silencing complex)- is a multiprotein complex which incorporates one strand of DNA. It is a mechanism of gene silencing in many eukaroytic cells
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.