Genetics Lab: Effect Of Environment On Gene Expression

Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Genetics Lab: Effect Of Environment On Gene Expression
Grade Levels
Common Core Standards
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2 MB|9 pages
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Product Description
This genetics lab demonstrates that the phenotype of an organism is due not only to its genotype, but also to the conditions in the surrounding environment. An individual's phenotype often depends on the influences of the environment. Is heredity or environment more important in determining the kinds of traits that appear in offspring? This lab will attempt to show the importance of each.

Suitable for science students in grades 8-12.

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Please Note: This product is included in two bundled units which can be viewed by clicking these links:

Genetics Complete Unit Plan Bundle

Biology Labs: 15 Must Do Labs for a Biology Class.

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Corn seeds that are the progeny of two heterozygous parents are planted by the students. My students love taking care of their corn and watching it grow! The environmental variable that is tested is light. Some students grow their corn in the dark; others grow their corn in the light. Students will learn that even if plants have the dominant allele for producing chlorophyll, they may still be albino in appearance in the absence of light.

Materials needed: Corn seeds need to be purchased from a biological supply company that show a 3:1 ratio of green to albino stem. Also needed are potting soil and any kind of container in which seeds can be planted. Plastic margarine dishes work fine.


PURPOSE:
1. To determine the expected numbers of normal to albino plants.
2. To record the actual numbers of normal to albino plants when corn seeds are germinated and allowed to grow.
3. To determine the influence of light on a genetic trait by comparing and analyzing class data.

Your download will include handouts that have: Title, Purpose, Introduction, Materials, Safety Precautions, Procedure, Analysis Questions, Student Data Pages, Answers to all Questions, and Teacher Preparation Notes.

You will download a folder that has 2 versions of the lab depending on whether you want your students to write a lab report on their own notebook paper, or if you want to use the enclosed student handouts. Both versions are in pdf form as well as Word documents.


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Total Pages
9 pages
Answer Key
Included
Teaching Duration
2 hours
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$3.25
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