Question 1

Which of the following best describes the Chromosomal Theory of Inheritance as proposed by Sutton and Boveri?

Accepted Answer

Genes are located on chromosomes, and the behavior of chromosomes during meiosis explains the patterns of inheritance observed by Mendel.

Question 2

A scientist is studying a newly discovered disease in humans and wants to use a model organism for genetic analysis. Which of the following characteristics is LEAST important when selecting a model organism?

Accepted Answer

The organism has a long life cycle.

Question 3

Which historical experiment provided the first direct evidence that DNA, and not protein, is the genetic material in bacteria?

Accepted Answer

Avery, MacLeod, and McCarty's experiment in 1944.

Question 4

Which of the following statements about the structure of DNA is CORRECT?

Accepted Answer

DNA is an antiparallel, double-stranded helix with complementary base pairing between adenine-thymine and guanine-cytosine.

Question 5

Which equation best represents the central dogma of molecular genetics?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 6

A patient is diagnosed with cystic fibrosis, a genetic disorder. Which of the following model organisms would be most appropriate for studying the genetic basis of this disease?

Accepted Answer

Mouse ($$Mus$$ $$musculus)$$

Question 7

Which of the following best explains why restriction enzymes were a major breakthrough for recombinant DNA technology?

Accepted Answer

They allow precise cutting of DNA at specific sequences, enabling the insertion of genes into vectors for cloning.

Question 8

Which of the following is NOT a function of proteins in the cell?

Accepted Answer

Storing genetic information for inheritance.

Question 9

A researcher is analyzing the complete set of proteins expressed in a cell under certain conditions. Which field of genetics is this researcher working in?

Accepted Answer

Proteomics

Question 10

Which of the following best describes the difference between genetics and evolution as scientific disciplines?

Accepted Answer

Genetics focuses on heredity and variation within individuals, while evolution studies changes in genetic composition of populations over time.

Question 11

Which of the following scenarios best illustrates artificial selection as practiced in early human history?

Accepted Answer

Humans breeding wolves to produce dogs with specific traits.

Question 12

Which of the following statements about Mendel's work is TRUE?

Accepted Answer

Mendel used quantitative data from pea plants to show that traits are passed from parents to offspring in predictable ways.

Question 13

Which of the following is a real-world application of recombinant DNA technology in agriculture?

Accepted Answer

Developing crop plants with delayed ripening to reduce spoilage.

Question 14

Which of the following best describes the role of bioinformatics in modern genetics?

Accepted Answer

Developing hardware and software for processing nucleotide and protein data.

Question 15

A student claims that proteins are the genetic material because they are more complex than DNA. Which experiment directly refutes this claim?

Accepted Answer

The Hershey and Chase experiment with bacteriophage in 1952.

Question 16

Which of the following is a correct statement about the process of transcription?

Accepted Answer

Transcription is the process by which information on a DNA strand is copied into messenger RNA (mRNA).

Question 17

Which of the following best explains why the rediscovery of Mendel's work around 1900 was significant for the field of genetics?

Accepted Answer

It provided a scientific explanation for inheritance patterns that Darwin and Wallace could not explain.

Question 18

Which of the following is a key feature of the cell theory as proposed by Schleiden and Schwann?

Accepted Answer

All organisms are composed of cells derived from preexisting cells.

Question 19

A geneticist is interested in studying the evolutionary relationships between different species by comparing their entire genome sequences. Which field of study does this research fall under?

Accepted Answer

Genomics

Question 20

Which of the following best describes the impact of genetics on society today?

Accepted Answer

Genetics raises sensitive issues such as genetic privacy, discrimination, and access to gene therapy.

PCB3063 – General Genetics: Introduction and Course Overview

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