Station 11
SC.7.L.16.1
Understand and explain that every organism requires a set of instructions
that specifies its traits, that this hereditary information (DNA) contains
genes located in the chromosomes of each cell, and that heredity is the
passage of these instructions from one generation to another.
SC.7.L.16.2 Determine the probabilities for genotype and phenotype combinations
using Punnett Squares and pedigrees.
SC.7.L.16.3 Compare and contrast the general processes of sexual reproduction
requiring meiosis and asexual reproduction requiring mitosis.
Resources:
Science Fusion, 7th Grade, Unit 8 “Reproduction and Heredity” and Unit 9 “DNA
and Modern Genetics” Page 430 – 432, 422-423, 453
http://www.biology4kids.com/files/cell_chromosome.html
 https://www.youtube.com/watch?v=BDvL6hXockw
Gizmo (www.explorelearning.com): “Mouse Genetics (One Trait)”
Questions:
1. Why do cells divide?
2. What happens to genetic material during cell division?
3. Differentiate between mitosis and meiosis.
4. What role does mitosis play in asexual reproduction?
5. Describe four ways organisms reproduce asexually.
6. What are the genetic advantages of sexual
reproduction?
7. What is heredity and what is the role of DNA in
determining an organisms traits?
8. Explain how dominant and recessive traits differ.
9. What is the relationship between genotype and phenotype?
10. How can a Punnett square be used to make
predictions about offspring? Be sure to include an
example.
Life Science – Punnett Square
ScienceSaurus Pages 123, 80-81, 112-116
Go to http://studyjams.scholastic.com/studyjams/jams/science/humanbody/heredity.htm
and watch the heredity video.
Go to http://vital.cs.ohiou.edu/steamwebsite/downloads/FurryFamily.swf
Google Punnett square games. It is the first one that pops up. Do the tutorial and then
play the game.
Take the quiz Google McGraw Hill Punnett square quiz
http://glencoe.mheducation.com/sites/0078778066/student_view0/chapter5/math_pra
ctice.html
Define the following words:
Station 11
1. Allele ______________________________________________________________________________
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2. Gene ______________________________________________________________________________
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3.Mitosis –_____________________________________________________________________________________
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4.Recessive ______________________________________________________________________________
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5. Homozygous ____________________________________________________________________________
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Create a punnett square with the following information and answer the questions below.
Explain the difference between Mitosis and Meiosis. What type of reproduction uses each,
and which cells are associated with each?
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