Download LT6: I can explain sex-linked patterns of inheritance in terms of some

February 5th – 8th, 2013 (Tuesday – Friday)
Tuesday – February 5th, 2013
Bellringer:
1. How can you evaluate whether or not an individual is homozygous or heterozygous for a trait by looking
at their genotype?
2. How are dominant and recessive genes written in a genotype?
DLT:
(LT 5): I can define and provide an example of the following: genotype, phenotype, dominant allele,
recessive allele, codominant alleles, incompletely dominant alleles, homozygous, heterozygous, and
carrier in order to answer questions pertaining to these terms. (C.1.i)
Today:
1. Projects are due today, but may be turned in tomorrow for no loss of credit. 5 points off for each after
Wednesday.
2. Review Wednesday/Thursday work from last week
a. Questions and Answers
b. Quiz/Quiz/Trade
c. Offspring Posters: List genotypes and draw phenotypes
d. Review grades while drawing
e. Homework (due Friday): What is the life cycle of Drosophila melanogaster, how does it live
(food, environment, etc.), and why is it used in so many scientific studies? This should be at
least one paragraph in length, and could include drawings.
3. Exit Slip:
a. What is a genotype? What is a phenotype?
b. Curly hair is a dominant trait, while straight hair is a recessive trait. What genotype would a
person with straight hair have? (Use the letter s to represent the alleles.)
c. Thinking about the question above, if a person has curly hair what would be two different
genotypes possible for this person?
Wednesday/Thursday – February 6th – 7th, 2013
Bellringer:
DLTs:
(LT7): I can construct and interpret Punnett squares and pedigree charts in order to calculate and
predict phenotypic and genotypic ratios and probabilities for different traits. (C.1.k)
(LT6): I can explain sex-linked patterns of inheritance in terms of some genes being absent from the
smaller Y chromosome, and thus males (XY) having a different chance of exhibiting certain traits than
do females (XX). (C.1.j)
Today:
1. Heredity Powerpoint
2. People Search
3. Genetics Problems worksheet 1 and 2
4. Non-Mendelian Heredity Powerpoint
5. Genetics Problems worksheet 3
Friday – February 8th, 2013
Bellringer:
DLTs:
(LT8): I can infer parental genotypes and phenotypes from offspring data presented in pedigree charts
and from the phenotypic and genotypic ratios of offspring (C.1.l)
(LT9): I can describe the mode of inheritance in commonly inherited disorders (e.g., sickle cell anemia,
Down syndrome, Turner’s syndrome, PKU) (C.1.m)
(LT10): I can complete a major project relating to recombinant DNA, cloning, or stem cell research
(C.1.n).
Today:
1. Drosophila homework due, experimental design
2. Drawing pedigrees
3. Pedigree investigations
4. Assign Heredity projects: due February 19th