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Download Lesson 14 - Sonoma Valley High School
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Lesson 14.1 Human Heredity Name: Per: 1 2 3 4 5 6 Warm up: Vocabulary: Karyotype Autosome Sex chromosome Pedigree Genetic disorder Photograph of chromosomes _________________________________ _________________________________________________________ Chromosome that is NOT ___________________________________ One of the 2 chromosomes __________________________________ ________________________________________________________ Chart that shows ___________________________________________ _________________________________________________________ Mutations in DNA resulting __________________________________ _________________________________________________________ 14.1 Lecture notes: Karyotype Humans have _____________________________________________ A karyotype is a photograph (enlarged) of ______________________ ________________________________________________________ The sex chromosomes ______________________________________ The rest are called _________________________________________ Sex ratio All human eggs contain _____________________________________ Half of human sperm contain ________________________________ ________________________________________________________ Sex ratio ________________________________________________ Human traits Human traits are inherited __________________________________ ________________________________________________________ Pedigree charts ____________________________________________ ________________________________________________________ Pedigrees Circles are ___________________Squares are __________________ Roman numerals are _______________________________________ Horizontal lines connecting male & female ______________________ Completely shaded circle or square indicates ____________________ _________________________________________________________ Vertical line and bracket connect ______________________________ Half-shaded circle or square indicates the person is _______________ _________________________________________________________ Gene complexity Humans have tens of _______________________________________ Genes interact with each other and ____________________________ ________________________________________________________ A change in a single gene can ________________________________ 3 missing bases causes ______________________________________ Blood groups 3 genes code for blood type: _________________________________ ________________________________________________________ Types A and B are _________________________________________ Type O is ________________________________________________ Rh factor is either _________________________________________ ________________________________________________________ Sex linked traits Males have just 1 X chromosome, so all X-linked alleles _________ _______________________________________________________ _______________________________________________________ Colorblindness Both parents have ________________________________________ Trait is located on the _____________________________________ ________________________________________________________ Who is the carrier? _______________________________ Which children are color blind? _______________________________ Autosomal disorders To have the disorder, person must inherit 2 ______________________ _________________________________________________________ _________________________________________________________ Examples of autosomal diseases: ______________________________ _________________________________________________________ Questions: 1. How many chromosomes do humans have? ____ _____________________ 2. What kind of chart is used to show heredity? ________________________ 3. Is the X or Y chromosome bigger? ________________________________ 4. Why do recessive X traits show on boys but not girls?_________________ ______________________________________________________________
