Transcript Modeling Genetic Inheritance

Modeling Genetic Inheritance
Carolina
Inquiries in Science
25-1006
$159.95
Kit Contents
• 16 spinners
• IDA’Clipieces (three large containers with a
variety of colored pieces and connectors)
• Teacher’s manual and reproducible Student
Guide
Student Learning Goals
• Observe the inheritance of traits over
generations
• Recognize contrasting phenotypes
• Propose and test models for inheritance of
phenotypes
• Make predictions about inheritance of
phenotypes
Prior Knowledge
This kit will work best as a reinforcement to
basic Mendelian Genetics.
Students should have a working knowledge
of the following terms:
alleles, dihybrid, dominant, genes,
genotype, heterozygous, homozygous,
hybrid, monohybrid, phenotype, Punnett
squares, recessive, traits,P1- maternal
parent, P2- paternal parent F1,-first
generation F2,-second generation
• Students should be able to write genotype
and phenotype abbreviations and have
some knowledge as to how Punnett
squares work.
How the Lab works
Step 1: Students are given a variety of
IDA’Clip pieces and are asked to build
an organism, real or imaginary, whose
inherited traits can be easily observed
and studied.
It is suggested that you limit the number
of pieces you give the students to cut
down on the amount of time this step
takes.
Step 2: the class will then look at the
organisms built and choose the ‘species’
everyone will build.
Step 3: as a class, compile a list of 4-6 traits
on which to focus. Determine which form
of each trait is dominant and which form is
recessive. Assign letters to represent each
allele.
Step 4: create a data table listing the names
of the traits, the dominant and recessive
phenotypes and dominant and recessive
genotypes for the traits.
Once you know what organism you
are studying
• A group of four will split into two pairs. One pair
will create the P1 (female organism) and the
other will create the P2 (male organism)
• The spinners will be used to go through the traits
and figure out what your parental organisms will
look like.
• List the genotype and phenotype for each trait
and reassemble as a group of 4 to compare the
parents.
F1 Generation
• The group of four will create a Punnett
square using their parental (P1-P2)
organisms.
• Number each of the boxes squares 1-4
and use the spinners to determine each
trait in the F1 generation.
• Create your organism from the genotypes
and phenotypes you spun.
F2 generation
• Join with members of another group and
cross your F1 organisms to create a
member of the F2 generation.
• Determine the genotypes and phenotypes
of the F2 generation using punnett
squares and the spinner like you did for
the F1 generation.
• Use remaining materials to create your F2
organisms.
Finish Up
• Using the chart in the student guide, put
an X in the appropriate column for each of
your organisms.
• As a class compile a list of the rate of
occurrence for each trait and graph the
results.
• Complete the questions at the end of the
guide.
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