Guided Reading Chapter 9 Read pages 153 169 1 Define heredity and describe how it relates to the term genetics 2 What is self fertilization and how does this form of fertilization differ from cross fertilization 3 Why do you think that it was important that Mendel understood and could control for how plants are fertilized 4 What is a true breeding plant 5 What is a hybrid 6 Rank the following generations from youngest to oldest F2 P F1 7 A researcher is studying the inheritance of a single gene so she performs a monohybrid cross with two heterozygous individuals What ratio will she observe in the F2 generation 8 Define the following a Homozygous b Heterozygous c Allele d Recessive e Dominant f Phenotype g Genotype h Punnet square 9 A lot of what we know about the field of genetics has emerged from work on fruit flies In flies the allele for red eye color is dominant over the allele for white eye color If you came across a red fly and wondered whether it was a homozygote or a heterozygote how could you determine its genotype 10 Describe how the rule of multiplication can be applied to a monohybrid cross 11 What does the term wild type mean 12 Many genetic disorders are caused by mutations in a single gene Determine whether or not you think a phenotypically normal parent can have offspring with a recessive disorder A dominant disorder Why or why not 13 Describe at least three different ways that physicians can test a fetus for a genetic disorder 14 Identify a risk associated with amniocentesis and or CVS 15 How does incomplete dominance differ from the blending hypothesis that was proposed and later disputed early in the 19th century 16 Can more than one allele exist for a single trait 17 Individuals with the AB blood type express both the A and the B allele in their red blood cells Individuals with blood type O do not express either the A or the B allele How do the red blood cells differ between individuals that are IAIB and individuals that are ii a Explain how these differences affect who different individuals can donate blood to 18 In Mendels work a single trait was determined by a single gene Can a single gene affect many different phenotypes a Can multiple genes affect a single phenotype
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