Biology Junction
Chromosomes and Karyotypes
One in 150 babies born presents a chromosomal condition, and society is getting closer to recognizing these as normal variations. Scholars learn about chromosomes and karyotypes with a resource that focuses on Down Syndrome as well as...
Cold Spring Harbor Laboratory
Chromosomes Carry Genes
Some traits only exist in males and some only in females. Pupils learn how the location of genes on sex chromosomes determines them using an interactive lesson. An animation illustrates how scientists know this to be true and shows how...
Curated OER
Cell, Socks, and Sex
Donate old socks for science! Young biologists model mitosis and meiosis, using socks as chromosomes and a balloon as a nucleus. This ingenious idea for modeling cell division will be more memorable to your young biologists than any set...
Curated OER
AP: Chapter 15: The Chromosomal Basis of Inheritance
AP biology course-takers peer into the workings of inheritance with this worksheet. They examine the Chromosomal Theory of Inheritance, Morgan's fruit fly experimentation, and sex-linked genetic traits. Vocabulary definitions and...
CK-12 Foundation
Sex-Linked Inheritance
Sex-linked traits indicate a gene's location on a specific chromosome. Scholars learn about sex-linked traits and the specifics behind color blindness in the videos. Then they complete the online interactive to apply their knowledge...
Howard Hughes Medical Institute
Test Your Knowledge of Sex Determination
Humans, fruit flies, and reptiles have their own rules where sex chromosomes are concerned. Scholars flip through a slide show offering an explanation of the chromosomes that determine the sex of different species. What is female in one...
Cold Spring Harbor Laboratory
Sex Cells Have One Set of Chromosomes; Body Cells Have Two
What's the difference between body cells and sex cells? Learners explore the question and the process of meiosis using an interactive lesson. An animation describes the discovery of meiosis and describes its phases for a detailed and...
Curated OER
Chromosomes and Genetic Mapping
Students create models of chromosomes using clay, coins, beads, or marbles. They complete a worksheet regarding their crossover frequencies they created with their chromosomes and gene models. They read an essay on sex chromosomes and...
Curated OER
The Human Genotype
Six different chromosome activites introduce biology aces to heredity, chromosomal abnormalities, sex-linked traits, and the human genome. The hands-on activites are fairly simple for the teacher to prepare and will prove to be both...
Curated OER
genetics
Parts of the cell as well as genetic material begin this presentation. As the slides continue, there are explanations of the main terms used in genetics. The structure of genetic material, chromosomes, and replication are summarized....
Curated OER
Errors of Meiosis: Chromosomal Abnormalities
After viewing these concise summaries of the common chromosome abnormalities that cause disorders, students' understanding of genetic errors will be much better. This presentation has clear diagrams to accompany the explanations. The...
Curated OER
Raven Chapter 13 Guided Notes: Patterns of Inheritance
In this short space, it would be impossible to describe the breadth of this seven-page genetics worksheet. Geared toward AP or college biology learners, they explore not only the basic vocabulary and concepts, but also the Law of...
Curated OER
Chromosomes
Students explore genetics, chromosomes and DNA. In this genetics lesson students design a chromosome and identify a family tree through genetics.
Serendip
Genetics
A handout on genetic inheritance begins with a reading on alleles and how they can result in albinism. Junior geneticists learn to complete Punnett squares and participate in a coin toss simulation of allele pairing. They also learn...
Curated OER
Karyotypes and Inheritance of Chromosomes
Students explore the mode of inheritance of chromosomes. Given a scenario, students use the Human Genome sheet to determine inherited chromosomes. They illustrate the difference between genotype and phenotype. Students develop a model...
Biology Corner
Pipe Cleaner Babies
Ever been told you have your father's eyes? How did it happen? Young biologists get a hands-on experience in meiotic gene expression with a fun pairs-based activity. Participants use pipe cleaner chromosomes with trait beads to make...
Curated OER
Dragon Genetics - Understanding Inheritance
Six pages begin with a detailed introduction to meiosis and homologous chromosome pairs. Instructions guide learners through a simulation in which they draw craft sticks marked with autosomes in order to decode the genes inherited by...
Cold Spring Harbor Laboratory
Specialized Chromosomes Determine Gender
Are you an XX or an XY? Budding scientists learn about cellular fertilization and the determination of gender in a thorough online lesson. They follow their study with a set of interactive reflection questions.
Curated OER
What Can We Learn From the X Chromosome?
Students read about the X and Y chromosomes in humans and complete a worksheet.
Curated OER
How Can You Predict the Characteristics of an Unborn Baby?
Students compare three sets of unlabeled human chromosomes and gather related data, trace chromosomes to pair them, and make observations about them.
Curated OER
Chromosomes
In this chromosomes learning exercise, learners complete a crossword puzzle with 33 questions about genetic mutation in chromosomes. They identify traits associated with certain genes.
Curated OER
Beyond Mendel's Laws of Inheritance
This PowerPoint jumps right into the details of unusual traits and how they are coded. The epistasis patterns in Labradors are used as a main example, and many instances of polygenic inheritance malfunctions are explained. All of this...
Curated OER
How Do Organisms Reproduce
Students examine the difference between mitosis and meiosis, and describe the steps involved in meiosis and the significance of each step. They create a diploid nucleus containing two pairs of chromosomes using clay.
Curated OER
Principles of Heredity
Students model traits on genes using colored paper and tongue depressors to represent chromosomes. In this heredity lesson plan, students use their "chromosome sticks" to understand chromosome pairs, genes, dominant traits, recessive...