Date: Feb 19, 2015 Page: Table of Contents p. 25 W.O.D: Last 5 pages Warm-ups:Front Cover W.O.D.: Genetic engineering- is the process of manually adding new DNA to an organism. The goal is to add one or more new traits that are not already found in that organism. Question: What do you think is one benefit of genetic engineering? .

Human Traits Wet (dominant) or dry (recessive) earwax Albinism (recessive) Cleft chin (dominant) Face freckles (dominant) Cheek dimples (dominant) Hitchhiker's thumb (recessive) Free (dominant) or attached (recessive) earlobes Widow's peak (dominant)

A pedigree chart is a diagram that shows the phenotypes of a particular gene its ancestors pass from one generation to the next. Males are represented by squares Females are represented by circles Males with the trait as their phenotype are solid squares Females with the trait as their phenotype are solid circles.

High Cholesteral Pedigree = Male, High Cholesteral = Female, High Cholesteral

1. In 3 generations, how many people have the phenotype for high cholesteral? 2. How many males have high cholesteral? How many females?

3. If a horizontal line means marriage, how many children married in the second generation? 4. Of those who married, how many had children with high cholesteral?

Sex/X-Linked Traits X-linked inherited diseases occur far more frequently in males because males only have one X chromosome. 1 in 20 males in a human population are green color blind 1 in 400 females in the population are expected to be color blind.

Reading: Skim pages 340-341. Read pages 342-343 Answer the four steps to ‘Problem Solving’ for Using a Pedigree: Define Organize Create a solution Present

Reflection: Y- linked traits Can hairy ears be a phenotype in women?