· web viewlife science chapter 5: genetics (the science of heredity) mr. varela (b7) section 1:...
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Section 1: Mendel’s Work What is Genetics?Genetics: __________________________________________________________
Heredity: __________________________________________________________
The Father of GeneticsThe field of _________________ was founded by
_________________________ , an Augustinian priest.
Between __________ and __________ ,
_______________ cultivated and tested almost
_________________________________________ .
The importance of ______________ work was not
discovered _________________________________
__________________________________________
-- Page 1 --
Crossing Pea
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Plants
Gregor Mendel crossed ___________________ that had different _____________ .
Mendel’s Experiments
In all of Mendel’s crosses, ______________________________________________
_________________________________________________________________ .
However, in the F2 generation, __________________________________________
_________________________________________________________________ .
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Dominant and Recessive Alleles
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Mendel studied _________________________________________________ .
Today, scientists use the word __________________________________________
_________________________________________________________________ .
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Dominant and Recessive Alleles
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Gene Allele Allele
In a dominant allele, __________________________________________________
_________________________________________________________________ .
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Dominant and Recessive Alleles
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Dominant alleles ____________________________________________________ .
Recessive alleles ____________________________________________________ .
-- page 5 --
Section 2: Probability and HeredityPunnett Square
The diagrams show how to make a Punnett square.
In this cross, both parents are _______________ for the trait of ______________ .
Section 1: Mendel’s Work
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
____ represents the ___________________________ , and
____ represents the ___________________________.
-- page 6 --
Probability and Genetics
In a genetic cross, _________________
________________________________
________________________________
________________________________
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Phenotypes and Genotypes
An organism’s PHENOTYPE is _______________
_____________________________________
_____________________________________
An organism’s GENOTYPE is _______________
_____________________________________
_____________________________________
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Practicing Punnett Squares
1)
Genotype: Phenotype:
2)
Genotype: Phenotype:
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
3)
Genotype: Phenotype:
4)
Genotype: Phenotype:
Homozygous vs. Heterozygous
Homozygous = _____________________________________________________
Also called _______________ or ______________________________ .
examples: _______________________________
Heterozygous = ____________________________________________________
Also called _______________________
examples: _______________________________
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Codominance
In codominance, the alleles are neither
_______________ nor _______________ .
As a result, _________________
__________________________
__________________________
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Incomplete Dominance
In incomplete dominance, _____________
________________________________
________________________________
As a result, ______________________
________________________________
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Section 3: The Cell and Inheritance
MeiosisDuring meiosis, ______________________________________________________
__________________________________________________________________
The resulting sex cells ________________________________________________
__________________________________________________________________
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
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Punnett Square
A Punnett Square ________________
______________________________
______________________________
A Lineup of Genes
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Chromosomes are made up of ____________________
__________________________________________
The chromosomes in a pair may have ______________
__________________________________________
__________________________________________
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Human Chromosomes
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Humans have _________________________ of chromosomes.
__________ from their mother, and __________ from their father.
The first ______________ are organized and named _______________________ :
Chromosomes _______ are the largest, _______ are the second largest, etc.
The _________ pair of chromosomes ( ___ and ___ ) are the ________ chromosomes
because they determine the _________________ of the person.
__________ = GIRL
__________ = BOY
-- page 12 –-
Sex Chromosomes
The ______________ is who determined the ______________ of the child since
_____________ need a _____________________ , and only ______________
have _____________________ .
The ______________ can only give out _____________________ , and both boys
and girls have at least one _____________________ .
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
-- page 13 –-
Section 4: Genes, DNA, and ProteinThe DNA Code
Chromosomes are made of __________. Each chromosome contains ______________
__________________________________ . The sequence of bases in a __________
forms a _____________ that tells the cell ________________________________
How Cells Make
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
Proteins
During protein synthesis, ______________________________________________
_________________________________________________________________
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
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Mutations
Mutations can cause __________________________________________________
_________________________________________________________________
_________________________________________________________________
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Life Science Chapter 5: Genetics (The Science of Heredity) Mr. Varela (B7)
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