Answer:
QTL or Quantitative Trait locus
Explanation:
QTL or Quantitative Trait locus are chromosome sequences in which multiple genes contribute to a quantitative trait. 
QLT is a locus that correlates with variation of quantitative trait in the phenotype of the population of an organism. It is an statistical method that links two type of information phenotypic and genotypic data in an attempt to explain the genetic variation in complex trait. 
 
        
             
        
        
        
Answer:
The correct answer isoption b: it will be converted into lactate and build up in the bloodstream. 
 
        
             
        
        
        
Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades, or even millions of years after a mass extinction
        
             
        
        
        
Repressor slows down transcription.
RNA Polymerase enzyme transcribes mRNA from DNA.
Explanation:
Promoters are the 100 to 900 bps long sequence of DNA, that helps in the initiation of transcription. The transcription gets slow down as repressor bind to the promoter region hampering the attachment of RNA Polymerase enzyme which is responsible for transcription. 
The process of transcription is the conversion of DNA into mRNA as told in the central dogma of molecular biology. Enzyme responsible for transcription is RNA polymerase. It is the first phase of gene expression, where DNA strand is copied into mRNA called a primary transcript.