Tag: chromosomes

  • Tasmanian Devil Karyotype (Remote Version)

    Tasmanian Devil Karyotype (Remote Version)

    Examine a karyotype showing the chromosomes of a Tasmanian devil. Arrange chromosomes and determine diploid number.

  • Devils, Chromosomes and Cancer

    Devils, Chromosomes and Cancer

    This is a good follow-up activity to the Tasmanian Devil Karyotype, where students examine how the chromosomes of cancerous cells can be altered. It is a short read about a transmissible cancer found in Tasmanian devils which causes facial tumors. This cancer, known as is has already killed 85% of the overall population and threatens…

  • Reinforcement: Chromosomes

    Reinforcement: Chromosomes

    Helpful review on chromosomes which focuses on terms such as diploid and haploid, mitosis and meiosis, and zygote versus gamete. Students also practice chromosome math using chickens as a model, which have 78 chromosomes in body cells. Worksheet is intended as a review for basic level biology students.

  • Practice Genetics:  Sex Linked Genes

    Practice Genetics: Sex Linked Genes

    Students learn basic Mendelian genetics by crossing traits from fruit flies and pea plants.  In this extension, students can practice doing crosses that involve sex-linked traits, where the alleles are located on the X chromosome  which affects the pattern of inheritance.   This worksheet is designed for beginning biology students, as it provides in most…

  • Case Study:  Why Are There No Male Calico Cats?

    Case Study: Why Are There No Male Calico Cats?

    This presentation case study asks two important questions regarding cat coloration: The case is presented as a slide presentation where students consider evidence and data related to cat coloration and chromosomes.  Working in small groups, they discuss the case and eventually answer the two main questions. I usually collect their answers at the end of class…