Genetics - 10 Basic Questions
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In Eukaryotes, mRNA is produced by
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RNA Polymerase I
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RNA Polymerase II
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RNA Polymerase III
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None
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This Genetics quiz assesses foundational knowledge in eukaryotic gene expression, DNA modifications, histone structure, and genomic characteristics. It's designed for learners to test their understanding of basic genetic mechanisms and their implications.
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- 2.
Deamination of methylated cytosine will produce
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Uracil
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Thymine
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Hypoxanthine
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Adenine
Correct Answer
A. ThymineExplanation
thymine is methylated uracilRate this question:
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- 3.
H1 histone is the highly conserved histone among all the others.
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True
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False
Correct Answer
A. FalseExplanation
It is the least conserved. H1 binds to linker DNA.Rate this question:
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- 4.
Human haploid genome consists of
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1 billion base pairs
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2 billion base pairs
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3 billion base pairs
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4 billion base pairs
Correct Answer
A. 3 billion base pairsExplanation
The human haploid genome consists of 3 billion base pairs. This is the correct answer because the haploid genome refers to the set of chromosomes in a gamete, which contains half the number of chromosomes found in a normal body cell. The human genome is diploid, meaning it consists of two sets of chromosomes, one from each parent. Each set contains approximately 3 billion base pairs, resulting in a total of 6 billion base pairs in a diploid genome. Therefore, the haploid genome, which represents only one set of chromosomes, contains 3 billion base pairs.Rate this question:
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- 5.
Number of genes encoded by mitochondrial genome
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37
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47
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57
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67
Correct Answer
A. 37Explanation
2 rRNA, 22 tRNA, 13 proteins of ETC ===> total 37Rate this question:
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- 6.
Restriction enzymes
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Are produced by viruses
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Cut only single stranded DNA
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Can cut the DNA anywhere
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Restrict the expression of viral DNA
Correct Answer
A. Restrict the expression of viral DNAExplanation
that's why they are known as restriction enzymes.Rate this question:
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- 7.
In mitochondrial mRNA, UGA cods for
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Methionine
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N-formyl methionine
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Tryptophan
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None
Correct Answer
A. TryptophanExplanation
AGA, AGG, UAA, UAG are the 4 mitochondrial stop codons.Rate this question:
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- 8.
Estimated number of human genes
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20 to 25 thousand
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50 thousand
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60 thousand
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1 lakh
Correct Answer
A. 20 to 25 thousandExplanation
The estimated number of human genes is 20 to 25 thousand. This is based on current scientific knowledge and research, which suggests that the human genome contains a relatively small number of genes compared to earlier estimations. Advances in genetic sequencing technology and analysis techniques have allowed researchers to refine their understanding of the human genome and identify the actual number of genes present. This estimate is widely accepted in the scientific community.Rate this question:
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- 9.
Equivalent of pribnow box in eukaryotes is
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Hogness box
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GC box
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CAAT box
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None
Correct Answer
A. Hogness boxExplanation
The Hogness box is the equivalent of the pribnow box in eukaryotes. The pribnow box is a DNA sequence found in prokaryotes that serves as the binding site for RNA polymerase during transcription initiation. Similarly, the Hogness box is a DNA sequence found in eukaryotes that functions as a promoter element for RNA polymerase II. It helps in the initiation of transcription by providing a binding site for transcription factors. Therefore, the Hogness box is the correct answer as it is the equivalent of the pribnow box in eukaryotes.Rate this question:
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- 10.
Telmerase is a ribonucleoprotein
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True
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False
Correct Answer
A. TrueExplanation
Telomerase contains RNARate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Jan 24, 2015Quiz Created by
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