Transcript Genetics Power Point

Today’s Plan: 8/26/09
• Bellwork: Go over quiz/continue Portfolio
(20 mins)
• Continue with Probability Lab (40 mins)
• Genetics Notes (the rest of class)
• Pack/Wrap-up (last 5 mins)
Today’s Plan: 8/27/09
• Bellwork: Genotype/Phenotype Practice (10
mins)
• Go over practice and monohybrid crosses
(25 mins)
• Monohybrid practice and review (the rest of
the period)
• Pack/Wrap-up (last few mins)
Phenotype/Genotype Practice
• In pea plants
– Axial flowers (A) are dominant to terminal
flowers (a)
– Inflated pods (I) are dominant to shriveled pods
(i)
– Tall plants (T) are dominant to short plants (t)
• In rabbits
– Straight ears (E) are dominant to floppy ears (e)
– Black fur (B) is dominant to white fur (b)
Today’s Plan: 8/28/09
• Bellwork: Vocab quiz (30 mins)
• If you finish the quiz early, work on the
practice genetics problems
• Go over practice/HW (as needed)
• Dihybrid Crosses (the rest of class)
• Pack/Wrap-up (last few mins of class)
Today’s Plan: 8/31/09
• Bellwork: Monohybrid/Dihybrid Self-quiz
(20 mins)
• Go over Incomplete and Codominance (20
mins)
• Practice Problems on incomplete and
codominance
• Pack/Wrap-up (last few mins of class)
Today’s Plan: 9/1/09
• Bellwork: Punnett Squares practice (20
mins)
• Begin Parenthood Lab (40 mins)
• Go over Sex-linkage (the rest of class)
• Pack/Wrap-up (last few mins)
Today’s Plan: 9/2/09
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•
•
•
Bellwork: Sex-Linkage quiz (20 mins)
Finish parenthood lab (40 mins)
Go over Polyallelism (the rest of the period)
Pack/Wrap-up (last few mins of class)
Today’s Plan: 9/3/09
• Bellwork: Finish Polyallelism (20 mins)
• Polygenic trait demo/discussion (30 mins)
• Finish baby lab and practice (the rest of the
period)
• Get list of Genetic Disorders for HW and
Pack/Wrap-up (last few mins)
Today’s Plan: 9/4/09
• Bellwork: Vocabulary quiz (30 mins)
– If you finish early, copy the list of genetic
disorders for your HW
• Karyotype notes (20 mins)
• Karyotype Practice Problems (20 mins)
• Punnett Square practice (the rest of the
period)
• Pack/Wrap-up (last few mins of class)
Today’s Plan: 9/8/09
•
•
•
•
Bellwork: Blue Diamond #4 (20 mins)
Finish Pedigrees (30 mins)
Remediation-Practice Problems
Pack/Wrap-up (last few mins of class)
Today’s Plan: 9/9/09
• Bellwork: Quiz Q&A/Practice(15 mins)
• Genetics Quiz (as needed)
• If you finish early, work on DNA Coloring
and questions on the overhead (the rest of
class)
• Pack/Wrap-up (last few mins of class)
Mendel’s Work
• Bred Plants for a long time (2 years
observing before started collecting data)
• Noticed several things:
– there are always 2 forms of a trait
– One form always appears and masks the other
(dominant)
– Sometimes, you can pair two dominant
phenotypes and end up with a recessive
phenotype
– there is rarely blending of inheritance
Mendel’s
Success
He chose simple test subjects.
•
• He chose easy-to-observe traits with 2 forms
(alleles)
• He chose traits which obey specific rules of
inheritance
• He discovered that traits sort themselves
between gametes (he didn’t know that this was
because of Meiosis), this sorting is random.
• He discovered that traits sort themselves
independently of one another (see vocab list),
to get a number of recombinations.
• He discovered ratios that reoccur.
Terminology
• Phenotype-the outward appearance of an
organism
• Genotype-what the genes say a person
should look like
• Important terms for determining ratios of
individuals and probability of cross
outcomes.
• Probability is the chance of things turning
out a certain way (see overhead)
Genetics Problems
• 1st-figure out the possible gametes to be
formed (which alleles will each gamete
carry?)
• 2nd-line up the gametes along the sides of a
Punnett square
– this is a tool which will always give you the
correct answer, as long as it is set up correctly
– to finish off the square, drop the gametes into
each of the small squares and calculate ratios
(probabilities)