Human Genetics MCQs with Answers

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

Human Genetics Online Quiz

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

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

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Human Genetics

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1 / 40

What is the function of ribosomes?

Lipid synthesis

DNA replication

Protein synthesis

2 / 40

Which phase of meiosis involves crossing over?

Metaphase I

Anaphase I

Prophase I

3 / 40

Which enzyme is responsible for transcribing RNA from a DNA template?

DNA helicase

DNA ligase

RNA polymerase

4 / 40

What is the significance of the Human Genome Project?

Mapping all human genes

Curing genetic diseases

Cloning humans

5 / 40

What is an allele?

A segment of RNA

A variant form of a gene

A type of protein

6 / 40

What term describes the physical appearance of an organism?

Phenotype

Genotype

Allele

7 / 40

Which process results in four genetically unique daughter cells?

Meiosis

Binary fission

Mitosis

8 / 40

What is genetic drift?

Random changes in allele frequencies in a population

Natural selection

Migration of alleles

9 / 40

What is a carrier in genetics?

A person with a dominant trait

A person with two dominant alleles

An individual who has one copy of a recessive allele

10 / 40

What is the purpose of meiosis?

To repair DNA

To produce gametes

To synthesize proteins

11 / 40

What is the genetic code?

The sequence of nucleotides in DNA

The types of proteins in a cell

The number of chromosomes

12 / 40

What is the role of tRNA in protein synthesis?

To carry genetic code

To form ribosomes

To bring amino acids to the ribosome

13 / 40

Which term describes the failure of chromosomes to separate during meiosis?

Nondisjunction

Inversion

Translocation

14 / 40

What is the role of microRNAs (miRNAs)?

Regulating gene expression

Replicating DNA

Synthesizing proteins

15 / 40

What term refers to the genetic makeup of an organism?

Genotype

Phenocopy

Phenotype

16 / 40

Which disorder is characterized by the presence of an extra X chromosome in males?

Klinefelter syndrome

Down syndrome

Turner syndrome

17 / 40

What is the basic unit of heredity?

Chromosome

Nucleotide

Gene

18 / 40

What is the principle of independent assortment?

Genes for different traits can segregate independently during the formation of gametes

Genes are linked together

Traits are inherited together

19 / 40

What is a dominant allele?

An allele that is masked

An allele only in males

An allele that expresses its phenotype even in the presence of a recessive allele

20 / 40

What term describes a pair of chromosomes that are similar in shape and size?

Non-sister chromatids

Sister chromatids

Homologous chromosomes

21 / 40

Which process involves the division of a single cell into two genetically identical daughter cells?

Meiosis

Mitosis

Fertilization

22 / 40

Which syndrome is caused by a deletion of a segment of chromosome 5?

Edwards syndrome

Patau syndrome

Cri-du-chat syndrome

23 / 40

What is the primary function of DNA polymerase?

DNA replication

Protein synthesis

RNA splicing

24 / 40

What is the result of a frameshift mutation?

No change in protein

A shift in the reading frame of codons

Formation of a new chromosome

25 / 40

What is a karyotype?

The expression of a trait

The number and appearance of chromosomes

The sequence of a gene

26 / 40

What structure holds two sister chromatids together?

Telomere

Histone

Centromere

27 / 40

What is the function of DNA ligase?

Synthesizing RNA

Joining Okazaki fragments

Unwinding DNA

28 / 40

What is a mutation?

A form of gene regulation

A type of chromosome

A change in DNA sequence

29 / 40

What is the purpose of a Punnett square?

To visualize protein structures

To predict the probability of offspring genotypes

To sequence DNA

30 / 40

Which molecule is the main energy carrier in cells?

ATP

RNA

DNA

31 / 40

What is a genetic linkage map?

A chart of karyotypes

A map of genetic disorders

A diagram showing the relative positions of genes on a chromosome

32 / 40

What is epigenetics?

Study of chromosomes

Study of heritable changes not involving DNA sequence

Study of mutations

33 / 40

What does PCR (Polymerase Chain Reaction) do?

Cuts DNA at specific sites

Labels DNA fragments

Amplifies DNA sequences

34 / 40

Which structure is composed of DNA and protein and found in the nucleus of eukaryotic cells?

Ribosome

Chromosome

Mitochondrion

35 / 40

Which molecule is known as the 'blueprint of life'?

DNA

Protein

RNA

36 / 40

Which genetic disorder is caused by an extra chromosome 21?

Turner syndrome

Down syndrome

Klinefelter syndrome

37 / 40

Which type of RNA carries the genetic code from the DNA to the ribosome?

rRNA

tRNA

mRNA

38 / 40

What is the main purpose of genetic recombination?

To synthesize proteins

To repair DNA

To increase genetic diversity

39 / 40

What is a homozygous genotype?

Having two identical alleles for a gene

Having no alleles

Having two different alleles

40 / 40

Which genetic principle states that alleles separate during gamete formation?

Law of dominance

Law of independent assortment

Law of segregation

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admin3 weeks ago

0 5 1 minute read