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

Question 1

Which of the following best describes the primary focus of genetics as a scientific discipline?

Accepted Answer

The study of how biological information is stored, transmitted, translated, and expressed.

Question 2

Which historical event marked the beginning of systematic genetic manipulation by humans?

Accepted Answer

The Neolithic Revolution (10,000 YBP)

Question 3

Which theory refuted the idea that all traits are preformed in the sperm or egg?

Accepted Answer

Theory of Epigenesis

Question 4

According to the Chromosomal Theory of Inheritance, what is the significance of homologous chromosomes?

Accepted Answer

They exist in pairs and carry the same genes, which segregate during meiosis.

Question 5

Which process is responsible for halving the chromosome number in sexually reproducing organisms?

Accepted Answer

Meiosis

Question 6

A mutation in a gene results in a new version of that gene. What is this new version called?

Accepted Answer

Allele

Question 7

Which of the following best explains the Central Dogma of molecular genetics?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$$

Question 8

Which of the following is NOT a branch of genetics?

Accepted Answer

Photosynthetic genetics

Question 9

A researcher is using gene knock-out technology to study the function of a specific gene. Which approach is being used?

Accepted Answer

Reverse genetics

Question 10

Which of the following statements about genetic variation is correct?

Accepted Answer

Mutations introduce new alleles, which may result in different phenotypes.

Question 11

Which model organism is commonly used in genetics research for studying development and cell lineage?

Accepted Answer

C. elegans

Question 12

Which of the following best describes the Modern Evolutionary Synthesis?

Accepted Answer

It combines Mendelian genetics with Darwinian natural selection.

Question 13

A population of plants shows a continuous range of heights. Which branch of genetics would most likely study this trait?

Accepted Answer

Quantitative genetics

Question 14

Which of the following is a direct application of genetics in society?

Accepted Answer

Forensic DNA analysis for law enforcement

Question 15

If a diploid organism has a chromosome number of $$2n = 46$$, what is the haploid number ($$n) $$after meiosis?

Accepted Answer

$$n = 23$$

Question 16

Which of the following statements about alleles is correct?

Accepted Answer

Alleles are different versions of the same gene found at the same locus.

Question 17

Which of the following best describes the impact of replication errors during DNA synthesis?

Accepted Answer

They can cause mutations, introducing new genetic variation.

Question 18

Which of the following is NOT a direct outcome of the 'omics revolution' in genetics?

Accepted Answer

Discovery of planetary systems

Question 19

Which of the following statements about the Central Dogma is FALSE?

Accepted Answer

Proteins are directly transcribed from DNA.

Question 20

A scientist observes a known phenotype and uses crossing experiments to identify the underlying gene. Which approach is this?

Accepted Answer

Forward genetics

Introduction to Genetics: Foundations, History, and Modern Applications

Study Guide - Practice Questions