Question

In: Biology

1. snRNA are used for which process or transcription or translation? a. Intron removal during RNA...

1. snRNA are used for which process or transcription or translation?
a. Intron removal during RNA editing
b. Recognition of small subunits of the ribosome during translation
c. Recognition of the promoter region during transcription
d. Recognition of start codon during translation

2. Epistasis is the term that describe when
a. There are multiple version of a gene
b. A gene is responsible for multiple phenotype
c. 2 or more gene interact to produce the phenotype
d. There is a difference in phenotype between the sexes

3. Which of the following is not involved drurinf transcription?
a. RNA polymerase
b. Promoter region
c. aminoacyl- rna synthesis
d. DNA template

4. Prokaryotes do not have which of the following type of rna?
a.mRNA
b.trna
c. rRNA
d.snRna

5.a eukaryotic dna cis sequence that increases transcription at a distance from the transcription start cite is called?
a. Insulator
b. Promoter
c. Inducer
d. Enhancer

6. Which of the following does not bring about potential changes in allele frequency in a population?
a. Small population size
b. Random mating

7. Which of the following is not a factor that could cause genetic drift to lead to a fixation of a gene locus?
a. Large population
b. Small population
c. Founders effect
d. Random chance

Solutions

Expert Solution

1. SnRNA are part of splicing machinery which plays an important role in post-transcriptional modification of RNA i.e removal of introns from pre-mRNA so the ans will be (a).

2. Ans C

Epistasis is the interaction of diffetent genes for a particular phenotype.Here,effect of one gene is dependent on the presence of another gene.

3.ans C

Aminoacyl-tRNAs play role in translation process where mRNA are translated into proteins with the help of ribosomes and tRNA.

4.Ans D

Prokaryotes never undergo post transcriptional modifications as they do not have introns in their mRNA.

5.ans D

Enhancers are the specific DNA sequences which are found away from promoter region but increases rate of transcription by interacting with transcription factors and RNA polymerase

6.Small populations result in fixing of allele frequency rather than change in allele frequency.

7.a.

Rest all are going to result in genetic drift.


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