In this development activity, high schoolers review the process of fertilization in placental organisms. Students determine what trimester certain events take place in a fetus' development. This activity has 10 fill in the blank and 7...

In this reproduction worksheet, students will review the genetic processes in sexual reproduction and asexual reproduction by answering 6 true or false statements. Then students will complete 2 short answer questions about the offspring...

High schoolers conduct lab test with minced onion to determine where chromosonal DNA is located within the cell, and whether or not it can be extracted.

Learners flip a pair of coins to determine what genotype and what phenotype their child have for 29 given traits. They draw a picture of their kid based on their coin flip phenotypes.

Winogradsky columns are ideal for observing the role of bacteria and other microorganisms in an ecosystem. This student activity guide is complete with data tables for observations and analysis questions for processing what was observed....

Students differentiate between reproductive and therapeutic cloning and then use research, discussion, and writing in journals to examine their own personal opinions on these subjects.

Students explore the concept of extinction by studying dinosaurs. In this dinosaur instructional activity, students distinguish between extinct creatures and those that still exist.

High schoolers identify chromosome pairs based upon band patterns and location of centromere. They order chromosome pairs based upon size. Students differentiate normal karyotypes from abnormal karyotypes. They correctly record karyotype...

There are vastly different systems of sex determination among animal life on earth. In this TED Ed presentation biologist, Aaron Reedy, shows us the incredible differences between species when it comes to determination of gender. [5:46]

Find out about the chromosomal basis of sex determination, X and Y chromosomes, and X-linkage.

Our genes are inherited from our parents, and the different combinations of these genes make us unique. Genetic inheritance controls the characteristics of all living things. This lesson focuses on the inheritance of biological sex in...

This site is a must see for any lesson or unit on biotechnology! It is a companion to the PBS video "Bloodlines: Technology Hits Home," although it can certainly be used without the video. It's a fantastic site that will challenge...

This resource presents a detailed discussion and explanation of the Y-chromosome and how it determines the male sex.

The basic principles of genetics are in this effective site. Gender determination, recessive traits, and the Punnet Square are the topics examined. There is also a Punnet Square practice exercise to assess your comprehension of the...

A library of information on chromosomes and their role in heredity. Articles found on the website study chromosome structure, chromosome composition, chromosome abnormalities, roles that chromosome plays in sex determination, and changes...

Students will explore Gregor Mendel's laws of genetics in this lesson plan. Students will be paired in male and female groups. If girls and boys can't be evenly divided, same sex students can be paired to represent research scientists....

Thomas Hunt Morgan will explain the research he did to determine that some traits are linked to the sex of an individual.

Excellent site where students are challenged to read several case studies and make choices about what they would do in the situation. After they choose they are presented with some of the consequences that their decision may produce in...

Using chromosome and gene models, students play the roles of two parents in this genetics simulation. The object is to create four offspring and determine their genotypes and phenotypes, and determine the probability of having offspring...