Educator Guide: Snake Gulps and Chromosome Sequencing

This little snake’s “big gulp” puts 7-Eleven to shame. Stretchy tissue in the snakes’ jaws enables them to swallow prey much wider than themselves. And the Gans’ egg-eater snake takes the cake — or egg — for most outsized meals. Learn how snakes gulp down meals much bigger than themselves while answering questions discussing proportions and comparing relative values vs. absolute measurements.

Scientists are still chipping away at the challenge of completing the puzzle of human genetics. Draw diagrams of DNA, chromosomes, genes and other genetics terms to review their relationships before piecing together the new findings of recent studies that fully sequenced Y chromosomes for the first time.