vachs biology punnet squares intro. transcription / translation review circle one: transcription...
TRANSCRIPT
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VACHS BIOLOGY
PUNNET SQUARES INTRO
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TRANSCRIPTION / TRANSLATION REVIEW
CIRCLE ONE: TRANSCRIPTION HAPPENS …. INSIDE OR OUTSIDE THE NUCLEUS?
CIRCLE ONE: TRANSLATION HAPPENS … INSIDE OR OUTSIDE THE NUCLEUS?
TRANSCRIPTION STARTS BY COPYING _________ INTO ____________.
TRANSLATION TURNS _____________ INTO _______________.
DURING TRANSLATION, THE AMINO ACIDS NEEDED TO BUILD PROTEINS ARE BROUGHT TO RIBOSOMES BY _____________.
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DNA IS COPIED AND EVENTUALLY TRANSLATED INTO PROTEIN…
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1. DNA AND THE GENES THEY CONTAIN ARE INHERITED FROM PARENTS…
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HOW CAN WE PREDICT THE TRAITS OF OUR OFFSPRING (CHILDREN)?
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GLOSSARY: GENOTYPE VS PHENOTYPE
GENOTYPE: genetic information
PHENOTYPE: observable traits (things you can see!)
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GLOSSARY: ALLELE VS GENE
Gene: a piece of DNA that determines a certain trait.
(example: gene that determines eye color)
Allele: one form of a gene.
(example: allele that codes for brown eyes)
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GLOSSARY: ALLELE VS GENE
2. PICK THE GENE AND ALLELE:
HAIR COLOR BLONDE HAIR
CURLY HAIR HAIR TEXTURE
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GENES VS ALLELES
The color of your hair is determined by a _________________. One ____________ of this
gene will cause you to have blonde hair.
The texture of your hair is determined by a _______________. One ____________ of this gene will cause you to have curly hair.
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MEIOSIS CONNECTION3. MEIOSIS CREATES HAPOLID CELLS WHICH HAVE …. HALF OR FULL SET OF CHROMOSOMES?
23 chromosomes from egg + 23 chromosomes from sperm = 46 chromosomes in typical cell
4. ONE SET OF CHROMOSOMES CARRIES ONE SET OF ALLELES; HALF OF YOUR GENETIC INFORMATION IS FROM EACH PARENT! uppppppp
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TWO PARENTS: ONE WITH BLUE EYES, ONE WITH BROWN EYES!
A ) What are their phenotypes ?
B ) What are their genotypes ?
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TWO PARENTS: ONE WITH BLUE EYES, ONE WITH BROWN EYES!
`What are their phenotypes?
`What are their genotypes?
`Bb, Bb or BB
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GLOSSARY: DOMINANT / RECESSIVE
DOMINANT: allele that is present in phenotype whenever it is present. (B)
RECESSIVE: allele that is present in phenotype only when there are two copies of this allele present. (b)
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ADD TO YOUR GLOSSARY:
~ HOMOZYGOUS :
~ HETEROZYGOUS :
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6. PRACTICE: WHAT IS THE PHENOTYPE OF EACH COMBINATION?
B = brown eyes b = blue eyes
~ BB =
~ Bb =
~ bb =
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7. CROSSING GENOTYPESDRAW A “ PUNNETT SQUARE” TO PREDICT THE GENOTYPE OF THE OFFSPRING!
ONE PARENT WITH BLUE EYES (HOMOZYGOUS RECESSIVE) AND ONE PARENT WITH BROWN EYES (HETEROZYGOUS DOMINANT!)
Parents along either side:
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PUNNET WORD PROBLEM!
A heterozygous white rabbit is crossed with a homozygous black rabbit.
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PUNNET PRACTICE! C: restaurant voicesH: raise your hand, ask the people at your table!A: use the punnet square worksheet to practice !M: sitting still, raise your hand if you would like to get colored pencilsP: finding the genotype, phenotype and ratio. S: finishing all the punnets accurately, and checking your answers.
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ZOMBIE PUNNET PORTRAITS: EXTRA CREDIT!
C: “restaurant voices”
H: raise your hand, ask the people at your table.
A: Following the instructions on in your packet, work independently to create a genetically accurate family of zombies!
M: stay seated during this activity. You should raise your hand and ask permission before moving around.
P: working independently on your portraits.
S: Completing all of the steps outlined in the packet carefully and creatively.