Grade 7 Class Room 27 at 104 W. Dorothy Lane, Kettering, OH 45429 US - Chapter 4 Study Guide

This is not the test!  It is a GUIDE to help you study.  It covers broad topics and ideas that might be incorporated into the test as multiple choice questions or short essays (2-3 sentence answers).

Chapter 4 Review Sheet

Modern Genetics

 

Vocab: multiple alleles, sex-linked gene, carrier, pedigree, genetic disorder, amniocentesis, karyotype, selective breeding, inbreeding, hybridization, clone, genetic engineering, gene therapy, genome

 

4-1: Human Inheritance

• Name a trait that is controlled by only one gene (remember the lab we did during chapter 3)
• Name a trait that is controlled by multiple genes
• How do you know if a trait is controlled by more than one gene?
• How are traits influenced by the environment of an organism?
• Why are males more likely than females to exhibit sex-linked traits controlled by a recessive allele (like color-blindness)?
• What is a carrier?
• What are pedigrees used for?  How do they give more information than a regular family tree?

4-2: Human Genetic Disorders

• What are two ways genetic disorders can be caused in humans?
• Describe the two tools used to diagnose genetic disorders (not just name them!)
• What does a genetic counselor do?
• Describe 2 of the 4 common genetic disorders we discussed in class.  (Good things to know would be: symptoms of the disorder, if there is any group of people more likely to have this disorder, is the disorder caused by dominant/recessive/or codominant alleles, is the disorder sex-linked, is there a cure).

4-3: Advances in Genetics

• Describe the two methods of selective breeding
• How are selective breeding and cloning similar?  How are they different?
• How can cloning be used to reproduce plants?
• What is genetic engineering?
• How is DNA fingerprinting used to solve crimes?
• What is the main goal of the Human Genome Project?
• Why is this goal important?