Q: Which equation correctly represents the calculation of genetic distance in centimorgans (cM) based on recombination frequency?

$$cM = \frac{\text{Number of recombinant offspring}}{\text{Total number of offspring}} \times 100$$

Question 1

Which of the following best describes the main difference between a genomic DNA library and a cDNA library?

Accepted Answer

A genomic DNA library contains DNA fragments representing the entire genome, while a cDNA library contains only cDNA copies of mRNA representing expressed genes.

Question 2

In Sanger sequencing, what is the role of dideoxynucleotides (ddNTPs)?

Accepted Answer

They terminate DNA synthesis by lacking a 3'-OH group, preventing the addition of further nucleotides.

Question 3

Which sequencing technology is most suitable for generating long reads (10,000 bp or more) in real-time?

Accepted Answer

Single-molecule sequencing (e.g., PacBio or Nanopore)

Question 4

A researcher wants to compare gene expression profiles between normal and cancerous tissues. Which omics approach and sequencing technology should they use?

Accepted Answer

Transcriptomics with RNA-seq using Illumina NGS

Question 5

Which of the following statements about the Human Genome Project (HGP) is correct?

Accepted Answer

The HGP used BACs and YACs for cloning DNA fragments before sequencing.

Question 6

Which equation correctly represents the calculation of genetic distance in centimorgans (cM) based on recombination frequency?

Accepted Answer

$$cM = \frac{	ext{Number of recombinant offspring}}{	ext{Total number of offspring}} 	imes 100$$

Question 7

Which of the following best describes the main advantage of Next Generation Sequencing (NGS) over Sanger sequencing?

Accepted Answer

NGS allows massively parallel sequencing of millions of short DNA fragments, increasing throughput and reducing cost per base.

Question 8

A scientist is interested in identifying novel antibiotic resistance genes in a soil sample without culturing the microbes. Which approach should they use?

Accepted Answer

Metagenomics

Question 9

Which of the following is a key feature of functional genomics?

Accepted Answer

It aims to assign biological functions to genomic elements using genome-wide approaches.

Question 10

Which omics technology would be most appropriate for studying global changes in DNA methylation patterns in cancer cells?

Accepted Answer

Epigenomics

Question 11

Which of the following steps is NOT part of the Illumina sequencing workflow?

Accepted Answer

Real-time detection of single DNA molecules without amplification

Question 12

A patient’s genome is sequenced and a single-nucleotide polymorphism (SNP) is found in a gene associated with a genetic disorder. What is the most likely impact of this SNP?

Accepted Answer

It may alter the gene’s function, potentially leading to disease.

Question 13

Which of the following best describes the process of genome assembly?

Accepted Answer

Aligning short sequence reads based on overlapping regions to reconstruct the original genome sequence.

Question 14

Which of the following is a primary application of proteomics in cancer research?

Accepted Answer

Comparing protein expression profiles between healthy and cancerous cells

Question 15

Which of the following statements about the reference human genome is correct?

Accepted Answer

It is assembled from pooled haploid genomes of multiple individuals.

Question 16

Which sequencing method would be most appropriate for detecting rare cell types in a heterogeneous tissue sample?

Accepted Answer

Single-cell RNA-seq

Question 17

Which of the following best describes the main goal of the ENCODE project?

Accepted Answer

To build a comprehensive catalog of functional elements in the human genome

Question 18

Which of the following is a key advantage of shotgun sequencing in whole genome sequencing (WGS)?

Accepted Answer

It allows for a clone-free approach by randomly fragmenting DNA and sequencing many short reads in parallel.

Question 19

Which omics technology would be most appropriate for analyzing the complete set of small molecules involved in cell metabolism?

Accepted Answer

Metabolomics

Genomic Technologies and Applications: DNA Sequencing, Genomics, and Multi-Omics

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