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Genetics MCQs with Answers

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

Actually, it is a sub-class of biology and, in simple words, deals with genes, heredity, and variations among organisms. What is most important, perhaps, is that it has been quite crucial to understand how traits and characteristics are passed along from one generation to another. At the core, lies the term ‘genes’ that refer to segments of DNA carrying information for building proteins and regulating most biological processes.

It involves but is not restricted to: molecular genetics, the study of the molecular structure and functioning of genes, and Mendelian genetics: that explains the mode through which traits are inherited based on the principles laid down by Gregor Mendel. Such advances in genetic studies have led to development techniques like DNA sequencing and genetic mapping, among others that give more details insight into the extent of genetic variations and their implication in health and disease.

Genetics proves useful in making a diagnosis for genetic disorders, risk prediction, and designing of specific treatment plans through its vast role in drugs. Genetic testing and counseling make an individual understand his genetic predispositions well and thus enable him to take proper decisions about his health.

Genetics has been used in agriculture to enhance crop production and resistance against pests and diseases by plant breeding and genetic modification. Evolutionary genetics also describes the history of evolution and the relationships between the species.

Indeed, genetics is a dynamic field that is changing and evolving quickly, constantly driving new findings in all fields of science and medicine.

Genetics Online Quiz

By presenting 3 options to choose from, 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 Genetics Questions and Answers and click over the correct answer.

  • Test Name: 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.

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Genetics MCQs

Genetics

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1 / 40

In a dihybrid cross (AaBb x AaBb), what is the phenotypic ratio of the offspring?

2 / 40

What is the probability of crossing two heterozygous individuals (Aa x Aa) and producing offspring with the homozygous recessive genotype?

3 / 40

What genetic disorder results from a mutation where individuals have an extra X chromosome (XXY)?

4 / 40

How many alleles does a diploid organism inherit for each gene?

5 / 40

What is the term for a diagram that shows the probable distribution of alleles in offspring from a genetic cross?

6 / 40

What is the genotype of a homozygous recessive individual for a particular trait?

7 / 40

What term refers to a change in the nucleotide sequence of DNA that may or may not alter the function of a gene?

8 / 40

What is the basic unit of heredity?

9 / 40

In humans, what is the sex genotype for a male?

10 / 40

What is the term for the allele that is expressed in a heterozygous individual?

11 / 40

Which term refers to the physical appearance of an organism?

12 / 40

What is the term for the mating of two individuals that differ at one genetic locus?

13 / 40

What is the term for an individual who has two identical alleles for a particular gene?

14 / 40

In Mendel's experiments, what is the term used for the offspring resulting from a cross between two true-breeding individuals?

15 / 40

Which law states that alleles segregate independently of each other during gamete formation, such that each gamete has an equal probability of receiving either allele?

16 / 40

What is the term for the condition in which one gene influences multiple traits?

17 / 40

What type of inheritance pattern is observed when both alleles contribute equally and fully to the phenotype?

18 / 40

What type of inheritance pattern results in the blending of traits from the parental generation to produce intermediate phenotypes in the offspring?

19 / 40

What is the sex-determining chromosome pair in humans?

20 / 40

In a monohybrid cross between two heterozygous individuals (Aa x Aa), what is the probability of producing an offspring with the homozygous recessive genotype?

21 / 40

What is the probability of producing an offspring with the dominant phenotype in a cross between a heterozygous dominant parent (Aa) and a homozygous recessive parent (aa)?

22 / 40

What is the term for the study of how genes are inherited and expressed?

23 / 40

What is the term for the observable traits of an organism, determined by both genetic and environmental factors?

24 / 40

What term describes the inheritance pattern where multiple genes influence the phenotype of a trait?

25 / 40

In humans, what is the sex genotype for a female?

26 / 40

Which term describes an individual with two different alleles for a particular gene?

27 / 40

What is the term for the specific location of a gene on a chromosome?

28 / 40

What is the term for alternative forms of a gene that arise by mutation and are found at the same locus on homologous chromosomes?

29 / 40

What is the term for a segment of DNA that codes for a specific trait?

30 / 40

Which law states that alleles of different genes assort independently during gamete formation?

31 / 40

What genetic disorder results from the inheritance of a mutated allele on the X chromosome, leading to progressive muscle degeneration?

32 / 40

What is the likelihood that a child will inherit a recessive disorder from two carrier parents (Aa x Aa)?

33 / 40

What is the likelihood that two carriers (Aa) of a recessive genetic disorder will have an affected child (aa)?

34 / 40

Which genetic disorder is caused by a trisomy of chromosome 21?

35 / 40

What term refers to the study of the inheritance of traits controlled by a single gene?

36 / 40

What is the term for the alleles an individual has for a particular trait?

37 / 40

What is the term for the probability that an individual will develop a particular trait or disorder?

38 / 40

What term describes the presence of more than two alleles for a genetic trait within a population?

39 / 40

What is the term for the specific genetic makeup of an individual, usually with reference to a particular characteristic under consideration?

40 / 40

Which genetic disorder is characterized by the inability to produce melanin pigment?

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