Microbial Genetics MCQs with Answers

adminJune 13, 2024Last Updated: October 15, 2024

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Welcome to the Microbial Genetics MCQs with Answers. In this post, we have shared Microbial Genetics Online Test for different competitive exams. Find practice Microbial Genetics Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Microbial Genetics.

Microbial genetics is the term given to the study of genes and their variation in heredity in microorganisms such as bacteria, viruses, fungi, and protozoa. It is a subspecialty of genetics and discusses the manner in which genes are inherited, expressed, and regulated in these organisms, thereby explaining their biology and behavior.

Determining that genetic makeup of microbes may range from genomes to genes and mutations within that gene would go to be crucial towards the understanding of microbial genetics. Scientists thus have studied mechanisms of horizontal gene transfer through transformation, transduction, and conjugation that contribute to the genetic diversity of populations of microbe.

The most relevant areas of microbial genetics concern gene expression regulation. Scientists explore how microorganisms regulate the expression of their genes if there is a change in the environment, thus unveiling mechanisms of growth and metabolism in microbes and pathogenicity mechanisms. For example, mechanisms explaining how bacteria cope with stress or work concerning bacterial operons and how bacteria regulate virulence factors through networks of regulation.

It has a very significant basis in biotechnology and medicine. Techniques from genetic engineering to CRISPR-Cas9 are used to meddle with the microbial genomes for applications from making antibiotics to gene therapy. It brings about the advancement of vaccines and treatments in infectious diseases through microbial genetics as well.

In a nutshell, the microbial genetics provides basic information regarding the microbial life, propelling innovations in science and medicine.

Microbial Genetics Online Quiz

By presenting 3 options to choose from, Microbial Genetics Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Microbial Genetics Questions and Answers and click over the correct answer.

Test Name: Microbial Genetics MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply click on question and comment below that question. so that we can update the answer in the quiz section.

Evolutionary Biology

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1 / 40

The principle that states alleles frequencies in a population will remain constant unless one or more factors cause them to change is ____.

Hardy-Weinberg equilibrium

Lamarckism

Mendelian genetics

2 / 40

Structures that have reduced or no function in one organism but have functional roles in related organisms are ____.

Homologous structures

Analogous structures

Vestigial structures

3 / 40

The type of natural selection where individuals with average traits have higher fitness is ____.

Stabilizing selection

Directional selection

Disruptive selection

4 / 40

The scientist who conducted experiments on natural selection using peppered moths was ____.

Charles Darwin

H.B.D. Kettlewell

Gregor Mendel

5 / 40

The process where the environment selects for or against particular traits is ____.

Natural selection

Artificial selection

Genetic drift

6 / 40

The process by which new species arise from a single ancestral species is called ____.

Speciation

Divergence

Convergence

7 / 40

The scientist who proposed the theory of natural selection independently of Darwin was ____.

Thomas Malthus

Alfred Russel Wallace

Gregor Mendel

8 / 40

The study of the fossil record to understand the origin and diversification of life is ____.

Ecology

Paleontology

Genetics

9 / 40

The concept that describes how some traits are favored in mating, leading to their increase in frequency in a population is ____.

Artificial selection

Natural selection

Sexual selection

10 / 40

The study of the distribution of species and ecosystems across space and time is ____.

Ecology

Genetics

Biogeography

11 / 40

The process by which individuals with advantageous traits survive and reproduce more successfully is ____.

Sexual selection

Natural selection

Artificial selection

12 / 40

The scientist who formulated the modern theory of evolution based on population genetics was ____.

R.A. Fisher

J.B.S. Haldane

Sewall Wright

13 / 40

The concept that characteristics acquired during an organism's lifetime can be passed on to offspring is ____.

Darwinism

Lamarckism

Mendelism

14 / 40

The study of the similarities and differences in the structures of organisms due to common ancestry is ____.

Comparative anatomy

Embryology

Molecular biology

15 / 40

The evolutionary process where two unrelated species develop similar traits due to similar ecological roles is ____.

Parallel evolution

Convergent evolution

Divergent evolution

16 / 40

The process by which species evolve in response to changes in each other over time is ____.

Divergent evolution

Convergent evolution

Coevolution

17 / 40

The accumulation of differences between populations that can lead to the formation of new species is ____.

Gene flow

Genetic divergence

Genetic drift

18 / 40

The term used to describe the genetic contribution of an individual to the next generation relative to the average for the population is ____.

Fitness

Variation

Adaptation

19 / 40

The phenomenon where a small population's allele frequencies change due to random chance is ____.

Gene flow

Genetic drift

Natural selection

20 / 40

The study of how traits are passed from parents to offspring and the variation of those traits in populations is ____.

Evolution

Genetics

Genomics

21 / 40

The study of the genetic makeup of populations and how it changes over time is called ____.

Phylogenetics

Paleontology

Population genetics

22 / 40

The scientist who proposed the theory of evolution through natural selection in 1858 with Darwin was ____.

Thomas Huxley

Jean-Baptiste Lamarck

Alfred Russel Wallace

23 / 40

The branch of biology that reconstructs evolutionary relationships among organisms is called ____.

Paleontology

Phylogenetics

Biogeography

24 / 40

The evolutionary principle where changes occur in bursts separated by periods of little change is ____.

Catastrophism

Punctuated equilibrium

Gradualism

25 / 40

The theory proposing that species evolve over time through natural selection is attributed to ____.

Gregor Mendel

Louis Pasteur

Charles Darwin

26 / 40

The genetic variation within a population that natural selection can act upon is ____.

Genotype diversity

Phenotype diversity

Allele frequency

27 / 40

The idea that species change gradually over time rather than suddenly is known as ____.

Gradualism

Lamarckism

Punctuated equilibrium

28 / 40

The process by which different species evolve similar traits independently in response to similar environmental conditions is ____.

Coevolution

Convergent evolution

Divergent evolution

29 / 40

The theory that genetic changes occur in small, gradual steps over long periods of time is ____.

Gradualism

Punctuated equilibrium

Catastrophism

30 / 40

The evolutionary process where species adapt to different ecological niches and diverge from a common ancestor is ____.

Speciation

Adaptive radiation

Convergent evolution

31 / 40

The concept that states the Earth's geological processes in the past are similar to those observed today is ____.

Catastrophism

Uniformitarianism

Punctuated equilibrium

32 / 40

The process by which species adapt to different ecological niches and diversify into new forms is ____.

Speciation

Convergent evolution

Adaptive radiation

33 / 40

The concept that changes in Earth's crust during geological history have resulted from the action of continuous and uniform processes is ____.

Uniformitarianism

Catastrophism

Punctuated equilibrium

34 / 40

Which of the following is NOT a mechanism of evolutionary change?

Mutation

Acclimatization

Genetic drift

35 / 40

The evolutionary process where two populations of the same species become reproductively isolated and diverge into separate species is ____.

Sympatric speciation

Allopatric speciation

Parapatric speciation

36 / 40

Structures with similar functions in different organisms that are not due to common ancestry are ____.

Vestigial structures

Analogous structures

Homologous structures

37 / 40

The process by which unrelated species evolve similar traits due to similar environmental pressures is called ____.

Adaptive radiation

Divergent evolution

Convergent evolution

38 / 40

The scientific field that studies the origin and evolution of genes and genomes is ____.

Genomics

Paleontology

Genetics

39 / 40

Anatomical structures that are similar in different species and have a common evolutionary origin are ____.

Analogous structures

Vestigial structures

Homologous structures

40 / 40

The process by which organisms better adapted to their environment tend to survive and produce more offspring is ____.

Genetic drift

Artificial selection

Natural selection

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adminJune 13, 2024Last Updated: October 15, 2024

0 24 2 minutes read