1. Genetics continued: 7.1 Sex Linkage 3.4 Genetic traits result in observed inheritance patterns. 3.5 Patterns of inheritance can be explained through Mendel’s laws of segregation and independent assortment. 3.6 Probabilities for genotype and phenotype combinations in monohybrid crosses can be modeled using a Punnett Square.

2. *two page notebook format* Page 63 Do Now:: 1) List traits that are different from person to person. (Reminder: Eye color is a trait, and brown eyes is one version or expression of that trait) 2) Review – what is the difference between autosomes and sex chromosomes? 3) For each trait listed in #1, do you think that trait is found on an autosome, or a sex chromosome? Monday, Jan 5, 2015 P 64 Topic: Genetics Objectives, language objectives: Relate dominant-recessive patterns of inheritance in autosomal chromosomes to genetic disorders. Describe patterns of inheritance in sex-linked traits. Language Objectives: Use the terms gene, sex-linked gene, allele, homozygous, heterozygous, carrier, genotype, phenotype, dominant, Punnett Square, monohybrid cross, dihybrid cross, probability, and recessive orally and in writing. (all week)

3. List traits that are different from person to person? (Reminder: Eye color is a trait, and brown eyes is one version or expression of that trait)

4. For each of those traits, which are located on autosomes and which are located on sex chromosomes?

5. Before we go further… Review video: Khan Academy “introduction to Mendelian genetics” Use note taking organizer to review terms from December.

6. Two copies of each autosomal gene affect phenotype Example: Cystic Fibrosis – a disorder caused by recessive alleles. The disease is lethal, but carriers do not show disease symptoms – only people who inherit 2 nonworking alleles.

7. CF example Carriers are not sick, and may not know they carry nonworking alleles in their DNA.

8. Males and females can differ in sex-linked traits. Quick Lab – Inheritance See handout for problem, procedure, and questions. All questions due tomorrow.

9. 7.1 Formative Assessment Choose and answer 2 questions from numbers 1-5 on page 191, on left side of notebook. SUMMARIZE what you learned today in 3-5 sentences on bottom of right side. Homework: Study Guide 7.1 Complete lab write-up if not done in class.