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  • Carolina BioKits®: Cladograms and Evolution

Carolina BioKits®: Cladograms and Evolution

Item # 221042 New Online Only Exclusive
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For a class of 32. Students use 2 lines of evidence to model evolutionary relationships. They examine the external anatomy of 5 preserved specimens and create a cladogram based on anatomical similarities. Next, they compare the amino acid sequence of the cytochrome c protein of each specimen to that of humans and construct a second cladogram based on these molecular similarities. Finally, they create a revised cladogram that considers both morphological characteristics and genetic information.

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Overview

In this classroom kit, students use 2 lines of evidence to model evolutionary relationships. First, students examine the external anatomy of 5 preserved specimens, note external morphological similarities between the animals, and then create a cladogram based on anatomical similarities. Next, students compare the amino acid sequence of the cytochrome c protein of each specimen to this amino acid sequence in humans. Students then construct a second cladogram based on these molecular similarities. Using information from both exercises, they then create a revised cladogram that considers both morphological characteristics and genetic information.

Kit is designed for a class of 32 students working in groups of 4 and includes 2 of each preserved specimen (grasshopper, crayfish, perch, frog, and rat), comprehensive teacher's manual with reproducible student guide, and FREE 1-year access to digital resources that support NGSS instruction.

This kit builds toward the following Next Generation Science Standards* Disciplinary Core Idea: • LS4.A: Evidence of Common Ancestry and Diversity
Genetic information, like the fossil record, provides evidence of evolution. DNA sequences vary among species, but there are many overlaps; in fact, the ongoing branching that produces multiple lines of descent can be inferred by comparing the DNA sequences of different organisms. Such information is also derivable from the similarities and differences in amino acid sequences and from anatomical and embryological evidence.

*Next Generation Science Standards® is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of, and do not endorse, this product.

   This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. For substitution suggestions, please call us at 800.334.5551 (8am to 8pm, ET, Monday-Friday).

  • This item is only available from Carolina Biological Supply Company.
  • This item is only available at Carolina.com.
  • This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. Visit our Login & Registration page to learn how to create a Login and link it to an approved school or business account.
 

What's Included

Components Qty Included?
Carolina's Perfect Solution® Crayfish 2 Included
Carolina's Perfect Solution® Grasshopper 2 Included
Carolina's Perfect Solution® Frog 2 Included
Carolina's Perfect Solution® Rat 2 Included
Preserved Perch 2 Included
Self-Locking Storage Bags 10 Included
Carolina Science Online® Resources (1-year subscription) 1 Included
Teacher's Manual with Reproducible Student Guide 1 Included
Ruler or Straightedge 32 Needed, Not Included
Highlighter 16 Needed, Not Included

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