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14 Jan 2013 Which form of reproduction is most likely to give a population of organisms genetic variety? Why? Vocabulary Allele Segregation Activity
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16 Jan 2013 How is an allele related to a gene? Explain and give an example.
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Nearpod Student Funny2018 Student PIN: FGOJO Set up Google Drive Science Folder 5-Lastname,FirstName
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Male alleles are both brown. Female alleles are brown and white. Show the possible outcomes for the offspring.
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I can differentiate and make connections between phenotypes and genotypes of organisms.
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The instructions for a specific inherited trait that are found on one section of a chromosome of DNA. For example, you have a gene(s) for each of the following traits: Hair color Eye color Hitchhiker’s thumb Tongue rolling Hairline Earlobes
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The different forms of a gene. Each gene is made up of at least two alleles, one inherited from the male parent and one from the female parent. For example: Gene for hair color: Blonde hair OR Black hair Gene for eye color: Blue eyes OR Brown eyes Gene for thumb shape: Hitchhiker’s thumb OR Straight thumb Gene for tongue rolling ability: Can roll tongue OR Can’t roll tongue Gene for hairline: Widow’s Peak OR Straight hairline
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Alleles that cover up, hide, mask, or over-power other alleles. The trait associated with the dominant allele always shows up when it is present (it dominates!). Writing convention: UPPERCASE letters. For example: H = Dominant (Straight thumb) h = Recessive (Hitchhiker’s thumb) Hh = Straight thumb HH = Straight thumb hh = Hitchhiker’s thumb
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Alleles that are covered up or hidden. The recessive trait will only show up if a dominant allele is NOT present. Writing convention: lowercase letters For example: W = Dominant (Widow’s peak) w = Recessive (Straight hairline) Ww = Widow’s peak ww = Straight hairline
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Both alleles are the SAME as each other. Homo = same For example: TT = homozygous DOMINANT (both alleles are dominant) tt = homozygous RECESSVIE (both alleles are recessive)
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Each allele is DIFFERENT from each other. Hetero = different For example: Hh Ss Ww Tt
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The genes that an organism has in their DNA Genotype = Genes Represented by letters Examples: Hh BB tt Dd
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The traits or characteristics of an organism (What it looks like) Phenotype = “Features” Examples: Brown or blonde hair color Brown or blue eye color Hitchhiker’s or straight thumb Tongue rolling ability or not Widow’s peak or straight hairline
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Male Alleles Female Alleles
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Use the letter “B” B = BROWN allele (dominant) b = blue allele (recessive).
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Rihanna has brown eyes. What is her PHENOTYPE? What is her GENOTYPE? Brown is dominant to blue.
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PHENOTYPE: brown eyes GENOTYPE: BB or Bb Brown is dominant to blue.
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Brad has blue eyes. What is his PHENOTYPE? What is his GENOTYPE?
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Brown is dominant to blue. PHENOTYPE: blue eyes GENOTYPE: bb
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Brown is dominant to blue. Justin has brown eyes. What is his PHENOTYPE? What is his GENOTYPE?
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Brown is dominant to blue. PHENOTYPE: brown eyes GENOTYPE: BB or Bb
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Use the letter “W” W = WIDOW’S PEAK allele (dominant) w = straight hairline allele (recessive)
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John has a widow’s peak. What is his PHENOTYPE? What is his GENOTYPE? Widow’s peak is dominant to normal hairline.
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PHENOTYPE: widow’s peak GENOTYPE: WW or Ww Widow’s peak is dominant to normal hairline.
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LeBron has a normal hairline. What is his PHENOTYPE? What is his GENOTYPE?
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Widow’s peak is dominant to normal hairline. PHENOTYPE: normal hairline GENOTYPE: ww
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If yes, what is your genotype? If no, what is your genotype? Which geneotype has could possibly be heterozygous? Why?
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(use the letter “F”)
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Freckles are dominant to no freckles. JLo has no freckles. What is her PHENOTYPE? What is her GENOTYPE?
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Freckles are dominant to no freckles. PHENOTYPE: no freckles GENOTYPE: ff
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Freckles are dominant to no freckles. Lindsay has freckles. What is her PHENOTYPE? What is her GENOTYPE?
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Freckles are dominant to no freckles. PHENOTYPE: freckles GENOTYPE: FF or Ff
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Freckles are dominant to no freckles. What is her PHENOTYPE? What is her GENOTYPE? Lady Gaga has no freckles.
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Freckles are dominant to no freckles. Lady Gaga has no freckles. PHENOTYPE: no freckles GENOTYPE: ff
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(use the letter “D”)
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Polydactyly is dominant to 5 digits. These people have 5 digits. What is the PHENOTYPE? What is the GENOTYPE?
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Polydactyly is dominant to 5 digits. PHENOTYPE: 5 digits GENOTYPE: dd
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Polydactyly is dominant to 5 digits These people have Polydactyly. What is the PHENOTYPE? What is the GENOTYPE?
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Polydactyly is dominant to 5 digits PHENOTYPE: Polydactyly GENOTYPE: Dd or DD
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Lack of pigmentation Recessive trait Use the letter “P” What is the genotype of this family? What is the phenotype?
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