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Warm up: Pg. 2 Row 1 Quiz Friday
Monday November 27, 2017 TEKS: A—Define heredity as the passage of genetic instructions from one generation to the next generation C—Recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus. Warm up: Pg. 2 Row 1 Quiz Friday
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Pg. 2 Answers to Row 1 Warm up
1A. What does the term hybrid mean? An organism that has 2 different alleles for a trait. 1B. The passing of genetic material from parent to child. Heredity 1C. This type of reproduction produces more diverse offspring. Sexual reproduction 1D. What does the term purebred mean? An organism has 2 of the same alleles. 1E. This type of reproduction produces more uniform offspring. Asexual Reproduction
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Pgs in Workbook Genetics: The study of heredity
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Heredity = the passing of traits from parents to offspring
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Heredity = the passing of traits from parents to offspring
Trait = A feature or characteristic of a person Physical appearance Behavior tendencies Predisposed to medical conditions A person’s traits are influenced by: their genetic inheritance environmental factors What is a trait?
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Trait = a feature or characteristic of a person
Physical appearance Genetics: Environment: hair color eye color face shape hair texture smile shape
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Trait = a feature or characteristic of a person
Physical appearance Genetics: genes determine natural hair color Environment: hair color eye color face shape hair texture smile shape
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Trait = a feature or characteristic of a person
Physical appearance Genetics: genes determine natural hair color Environment: sun or hair dyes change hair color hair color eye color face shape hair texture smile shape
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Trait = a feature or characteristic of a person
Behavior tendencies Genetics: Environment:
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Trait = a feature or characteristic of a person
Behavior tendencies Genetics: genes determine the tendency to use a certain hand Environment:
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Trait = a feature or characteristic of a person
Behavior tendencies Genetics: genes determine the tendency to use a certain hand Environment: can learn to use the opposite hand
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Trait = a feature or characteristic of a person
Predisposed to medical conditions Genetics: Environment:
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Trait = a feature or characteristic of a person
Predisposed to medical conditions Genetics: genes determine a risk of heart disease Environment:
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Trait = a feature or characteristic of a person
Predisposed to medical conditions Genetics: genes determine a risk of heart disease Environment: eating healthy foods and exercising can reduce risk
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Trait = a feature or characteristic of a person
Phenotype = a person’s version of a trait “physical appearance” hair color: black eye color: blue hair texture: straight
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Practice List 3 traits Dash has. List Dash’s phenotype for each trait.
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Trait = a feature or characteristic of a person
Gene = part of a person’s DNA that influences a trait Eye color gene Face shape gene Hair color gene
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Gene = part of a person’s DNA that controls a trait
Alleles= different versions of a gene Eye color gene: brown allele Eye color gene: blue allele
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Practice List 3 possible alleles for the hair color gene.
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Alleles = different versions of a gene
Dominant Allele Represented by a capital letter Example: B for brown eyes Recessive allele Represented by a lowercase letter Example: b for blue eyes
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Alleles = different versions of a gene
All people have 2 alleles for every gene (one from each parent) Allele of eye color gene from dad Allele of eye color gene from mom
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Alleles = different versions of a gene
All people have 2 alleles for every gene (one from each parent) Genotype = a person’s combination of alleles “genetic makeup” Allele of eye color gene from dad Allele of eye color gene from mom
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 dominant alleles = purebred dominant Example: B and B Genotype = Phenotype = Mom Dad E E Child
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 dominant alleles = purebred dominant Example: B and B Genotype = BB Phenotype = Mom Dad E E Child
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 dominant alleles = purebred dominant Example: B and B Genotype = BB Phenotype = brown eyes Mom Dad E E Child
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 recessive alleles = Mom Dad e e Child
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 recessive alleles = purebred recessive Example: b and b Genotype = Phenotype = Mom Dad e e Child
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 recessive alleles = purebred recessive Example: b and b Genotype = bb Phenotype = Mom Dad e e Child
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Genotype = a person’s combination of alleles
A person may inherit 2 of the same alleles = purebred 2 recessive alleles = purebred recessive Example: b and b Genotype = bb Phenotype = blue eyes Mom Dad e e Child
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Alleles = different versions of a gene
A person may inherit 2 different alleles = hybrid Dominant allele masks recessive allele Example: B and b Genotype = Phenotype = Mom Dad Mom Dad e E E e -or- Child Child
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Alleles = different versions of a gene
A person may inherit 2 different alleles = hybrid Dominant allele masks recessive allele Example: B and b Genotype = Bb Phenotype = Mom Dad Mom Dad e E E e -or- Child Child
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Alleles = different versions of a gene
A person may inherit 2 different alleles = hybrid Dominant allele masks recessive allele Example: B and b Genotype = Bb Phenotype = brown eyes Mom Dad Mom Dad e E E e -or- Child Child
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Practice Brown hair (B) is dominant to blond hair (b). Genotype
Phenotype purebred dominant purebred recessive hybrid
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Practice Brown hair (B) is dominant to blond hair (b). Genotype
Phenotype purebred dominant BB Brown hair purebred recessive hybrid
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Practice Brown hair (B) is dominant to blonde hair (b). Genotype
Phenotype purebred dominant BB Brown hair purebred recessive bb Blond hair hybrid
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Practice Brown hair (B) is dominant to blond hair (b). Genotype
Phenotype purebred dominant BB Brown hair purebred recessive bb Blond hair hybrid Bb Which genotypes are purebred? Which is hybrid?
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Practice Right-handedness (R) is dominant to left-handedness (r).
What genotype(s) could a right-handed person have? What genotype(s) could a left-handed person have? RR or Rr rr
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Practice In pea plants, green peas (G) are dominant to yellow peas (g). What would be the genotype of a: -purebred green pea? -hybrid green pea? -yellow pea? GG Gg gg
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Pgs. 16-17 in Workbook Bikini Bottom Genetics Use your notes to help complete the activity.
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Warm up: Pg. 2 Row 2/3—Punnett Square Quiz Friday
Wednesday November 29, 2017 TEKS: A—Define heredity as the passage of genetic instructions from one generation to the next generation C—Recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus. Warm up: Pg. 2 Row 2/3—Punnett Square Quiz Friday
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Warm up: Pg. 2 Row 2/3—Punnett Square
Thursday November 30, 2017 TEKS: A—Define heredity as the passage of genetic instructions from one generation to the next generation C—Recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus. Warm up: Pg. 2 Row 2/3—Punnett Square
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Answer to Pg. 2 Row 2/3 Y y YY, Yy, yy Yellow seeds, green seeds 75%
25%
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Punnett Squares Video on Punnett Squares Pgs. 18-19 in workbook
Heterozygous—Hybrid Homozygous--Purebred If you finish those pages then you may work on pg. 20
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Warm up: Pg. 2 Row 3—Punnett Square Quiz Tomorrow
Thursday November 30, 2017 TEKS: A—Define heredity as the passage of genetic instructions from one generation to the next generation C—Recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus. Warm up: Pg. 2 Row 3—Punnett Square Quiz Tomorrow
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Answer to Pg. 2 Row 3 B b b Bb bb 50 % 50 %
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Punnett Squares Video on Punnett Squares Pgs. 21-22 in workbook
Heterozygous—Hybrid Homozygous—Purebred Question 3—orange parent If you finish those pages then you may work on pg. 20
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