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Transcript
Combination of Genes Notes
Name __________________ Date _______ Period ____
Use the table below to record vocabulary of the concepts discussed in the lesson on the combination of genes.
Organism
___________
are various forms of
the same gene
_____________
describes the actual
characteristics that
can be observed
____________
describe the actual
genes an organism
has
_____________
allele is expressed in
the phenotype even
if only one copy is
present in the
genotype
_____________
allele is expressed
in the phenotype
only when two
copies of it are
present
Dark
AA
A
none
Dark
Aa
A
a
Light
aa
none
aa
AA
called
___________
because it has the
same form of the
same gene
Aa
called
___________
because it has two
different forms of the
same gene
aa
called
___________
because it has the
same form of the
same gene
Combination of Genes Notes
Name __________________ Date _______ Period ____
A _________________ is used to illustrate
how a parent’s alleles might combine in offspring.
Fill in the example to the right with information
shown in the lesson.
Use the Punnett Square to the right to answer the questions below.
Identify the parent alleles. _________________
Which parent’s alleles are homozygous? ______________________
Identify the heterozygous alleles? _____________________
What percent of Rusty and Carrie’s offspring will have Brown eyes? ______________
Explain how you determined the percent on the previous question. _______________
____________________________________________________________________
What percent of Rusty and Carrie’s offspring will have Blue eyes? _______________
Explain how you determined the percent on the previous question. _______________
____________________________________________________________________
Define Selective Breeding. ______________________________________________________________________________________
Examples of Selective Breeding _________________________________________________________________________________
Define Mutation ______________________________________________________________________________________________
Define Pedigree ______________________________________________________________________________________________