DNA – The Molecule of Life

7 Topics | 6 Quizzes

1 | Chromosomes

Chromosomes – Topic Quiz

2 | Chromosomes in Body Cells

Chromosomes in Body Cells – Topic Quiz

3 | Chromosomes in Sex Cells

Chromosomes in Sex Cells – Topic Quiz

4 | Chromosome Sets

Chromosome Sets – Topic Quiz

5 | Autosomal Chromosomes and Sex Chromosomes

Autosomal Chromosomes and Sex Chromosomes – Topic Quiz

6 | Sex Determination in Humans

Sex Determination in Humans – Topic Quiz

7 | Summary

Cell Division – DNA Replication, Mitosis and Meiosis

5 Topics | 4 Quizzes

1 | Cell Division

Cell Division – Topic Quiz

2 | DNA Replication

DNA Replication – Topic Quiz

Asexual and Sexual Reproduction

5 Topics | 4 Quizzes

1 | Biological Reproduction

Biological Reproduction – Topic Quiz

2 | Asexual Reproduction

Asexual Reproduction – Topic Quiz

3 | Sexual Reproduction

Sexual Reproduction – Topic Quiz

4 | The Human Life Cycle

The Human Life Cycle – Topic Quiz

5 | Summary

Genes, Genotype and Phenotype

7 Topics | 6 Quizzes

1 | Heredity

Heredity – Topic Quiz

5 | Homozygosity and Heterozygosity

Homozygosity and Heterozygosity – Topic Quiz

6 | Genotype and Phenotype

Genotype and Phenotype – Topic Quiz

7 | Summary

Dominance, Incomplete Dominance and Codominance

4 Topics | 3 Quizzes

1 | Phenotype of Heterozygous Individuals

Phenotype of Heterozygous Individuals – Topic Quiz

2 | Dominant and Recessive Inheritance

Dominant and Recessive Inheritance – Topic Quiz

3 | Incomplete Dominance and Codominance

Incomplete Dominance and Codominance – Topic Quiz

4 | Summary

Sex-Linked Inheritance

5 Topics | 4 Quizzes

1 | Sex-Linked Traits

Sex-Linked Traits – Topic Quiz

2 | X-Linked Inheritance in Males and Females

X-Linked Inheritance in Males and Females – Topic Quiz

3 | Y-Linked Inheritance in Males and Females

Y-Linked Inheritance in Males and Females – Topic Quiz

4 | Writing Genotypes for Sex-Linked Traits

Writing Genotypes for Sex-Linked Traits – Topic Quiz

5 | Summary

Punnett Squares

5 Topics | 4 Quizzes

1 | Introduction to Punnett Squares

Introduction to Punnett Squares – Topic Quiz

2 | Steps for Completing a Punnett Square

Steps for Completing a Punnett Square – Topic Quiz

3 | Punnett Squares for Incomplete Dominance and Codominance

Punnett Squares for Incomplete Dominance and Codominance – Topic Quiz

4 | Punnett Squares for Sex-Linked Traits

Punnett Squares for Sex-Linked Traits – Topic Quiz

5 | Summary

Mendelian Genetics

6 Topics | 5 Quizzes

1 | Gregor Mendel

Gregor Mendel – Topic Quiz

2 | Pure Breeding Lines and Cross-Pollination

Pure Breeding Lines and Cross-Pollination – Topic Quiz

3 | Monohybrid Cross

Monohybrid Cross – Topic Quiz

4 | Explaining a Monohybrid Cross Using Punnett Squares

Explaining a Monohybrid Cross Using Punnett Squares – Topic Quiz

5 | Test Cross

Test Cross – Topic Quiz

6 | Summary

Pedigree Charts

10 Topics | 9 Quizzes

1 | Introduction to Pedigree Charts

Introduction to Pedigree Charts – Topic Quiz

2 | Representing Individuals on a Pedigree Chart

Representing Individuals on a Pedigree Chart – Topic Quiz

3 | Representing Relationships on a Pedigree Chart

Representing Relationships on a Pedigree Chart – Topic Quiz

4 | Pedigree Charts and Modes of Inheritance

Pedigree Charts and Modes of Inheritance – Topic Quiz

5 | Autosomal Dominant Inheritance

Autosomal Dominant Inheritance – Topic Quiz

6 | Autosomal Recessive Inheritance

Autosomal Recessive Inheritance – Topic Quiz

7 | X-linked Dominant Inheritance

X-linked Dominant Inheritance – Topic Quiz

8 | X-linked Recessive Inheritance

X-linked Recessive Inheritance – Topic Quiz

9 | Interpreting Pedigree Charts

Interpreting Pedigree Charts – Topic Quiz

10 | Summary

Genetic Mutation

6 Topics | 5 Quizzes

1 | Overview of Genetic Mutations

Overview of Genetic Mutations – Topic Quiz

2 | Chromosomal Mutations and DNA Mutations

Chromosomal Mutations and DNA Mutations – Topic Quiz

3 | Spontaneous Mutations and Induced Mutations

Spontaneous Mutations and Induced Mutations – Topic Quiz

4 | Somatic Mutations and Gametic Mutations

Somatic Mutations and Gametic Mutations – Topic Quiz

5 | Harmful, Beneficial and Neutral Mutations

Harmful, Beneficial and Neutral Mutations – Topic Quiz

6 | Summary

Genetic Variation and Change

8 Topics | 7 Quizzes

1 | Genetic Variation

Genetic Variation – Topic Quiz

2 | Genetic Variation Within Populations

Genetic Variation Within Populations – Topic Quiz

3 | Sources of Genetic Variation

Sources of Genetic Variation – Topic Quiz

4 | Natural Selection

Natural Selection – Topic Quiz

5 | Adaptation of Populations

Adaptation of Populations – Topic Quiz

6 | Genetic Variation and Survival

Genetic Variation and Survival – Topic Quiz

7 | Artificial Selection

Artificial Selection – Topic Quiz

8 | Summary

Evolution – The Process

9 Topics | 8 Quizzes

1 | Darwinian Evolution

Darwinian Evolution – Topic Quiz

2 | Overview of the Process of Evolution

Overview of the Process of Evolution – Topic Quiz

3 | Genetic Variation in Populations

Genetic Variation in Populations – Topic Quiz

4 | Reproductive Isolation of Populations

Reproductive Isolation of Populations – Topic Quiz

5 | Natural Selection, Genetic Drift and New Mutations

Natural Selection, Genetic Drift and New Mutations – Topic Quiz

6 | Speciation

Speciation – Topic Quiz

7 | Phylogenetic Trees

Phylogenetic Trees – Topic Quiz

8 | Some Misconceptions About Evolution

Some Misconceptions About Evolution – Topic Quiz

9 | Summary

Evolution – The Evidence

6 Topics | 5 Quizzes

1 | The Evidence for Evolution

The Evidence for Evolution – Topic Quiz

2 | The Fossil Record

The Fossil Record – Topic Quiz

3 | Comparative Anatomy

Comparative Anatomy – Topic Quiz

4 | Biogeography

Biogeography – Topic Quiz

5 | Molecular Biology

Molecular Biology – Topic Quiz

6 | Summary

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1 | DNA in Cells

Year 10 Biology Online Course 8.4 DNA – The Molecule of Life 1 | DNA in Cells

DNA

All living things have genetic information stored in large molecules called DNA (deoxyribonucleic acid).

DNA is stored in the nuclei of cells, where it is packaged into thread-like structures called chromosomes.

The order of the subunits that make up DNA molecules encodes the genetic information of an organism.

cell nucleus chromosome dna

Cells contain chromosomes, which carry genetic information in the form of DNA.

(Image: fancytapis, Adobe Stock)

Quizzes

DNA in Cells – Topic Quiz

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