Q: Which of the following is the correct sequence described by the Central Dogma of Molecular Biology?

$$\text{DNA} \rightarrow \text{mRNA} \rightarrow \text{Protein}$$

Question 1

Which of the following best describes the main contribution of Gregor Mendel to the field of genetics?

Accepted Answer

He demonstrated that traits are inherited in predictable patterns through experiments with pea plants.

Question 2

Which statement best summarizes the Cell Theory as proposed by Schleiden and Schwann?

Accepted Answer

All living things are made of cells, and cells arise from pre-existing cells.

Question 3

Which experiment by Louis Pasteur provided evidence against the theory of spontaneous generation?

Accepted Answer

He boiled broth in a swan-neck flask, preventing cells from entering and showing no life appeared unless exposed to air.

Question 4

Which of the following is the correct sequence described by the Central Dogma of Molecular Biology?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{mRNA} ightarrow 	ext{Protein}$$

Question 5

A mutation in a gene results in a change in the amino acid sequence of a protein. Which of the following is the most direct consequence of this mutation?

Accepted Answer

The phenotype of the organism may change.

Question 6

Which of the following best defines an allele?

Accepted Answer

An alternate form of a gene found at the same locus on a chromosome.

Question 7

In humans, the diploid number of chromosomes is 46. What is the haploid number, and during which process is it produced?

Accepted Answer

$$n = 23$$, produced during meiosis

Question 8

Which of the following statements about artificial selection is correct?

Accepted Answer

It is a process where humans select for desirable traits in organisms, leading to changes in populations over generations.

Question 9

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

Accepted Answer

Producing insulin in bacteria for diabetes treatment.

Question 10

Which of the following best describes the difference between genotype and phenotype?

Accepted Answer

Genotype refers to the specific alleles present, while phenotype is the observable expression of those alleles.

Question 11

Which of the following is NOT a characteristic of a good model organism in genetics research?

Accepted Answer

Long generation time

Question 12

Which of the following best describes the process of forward genetics?

Accepted Answer

Using mutants to identify the genes responsible for a phenotype.

Question 13

Which of the following is a direct result of meiosis in sexually reproducing organisms?

Accepted Answer

Halving of the chromosome number in gametes

Question 14

Which of the following best describes the role of restriction enzymes in recombinant DNA technology?

Accepted Answer

They cut DNA at specific sequences, allowing for gene insertion.

Question 15

A scientist wants to study the function of a specific gene by knocking it out in mice. Which approach is she using?

Accepted Answer

Reverse genetics

Question 16

Which of the following is an example of a transgenic organism?

Accepted Answer

A mouse that has received a jellyfish gene to express green fluorescent protein.

Question 17

Which of the following statements about the chromosome theory of inheritance is correct?

Accepted Answer

Genes are found on chromosomes, which are inherited from both parents.

Question 18

Which of the following '-omics' technologies would be most useful for studying all the proteins expressed in a cell?

Accepted Answer

Proteomics

Question 19

A patient is diagnosed with a hereditary disease caused by a single gene mutation. Which modern genetic technology could be used to locate the gene responsible?

Accepted Answer

Biotechnology in medicine using gene mapping techniques

Introduction to Genetics: Foundations, Milestones, and Modern Advances

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