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Name: _____________________Date: ___________Period:_________ Use the diagram below to answer the following questions. Key B= Brown b= Blue (Father) b b (Mother) B b 1. What color eyes does the mother have? ___________________ 2. What color eyes does the father have? ___________________ 3. What gene combination should appear in the two boxes that are blank?_________ ____________ 4. What percentage chance is there that one of the offspring will be heterozygous dominant? ___________ What gene combination would this offspring have?_____________ 5. What percentage chance is there that one of the offspring will be homozygous recessive? ___________What gene combination would this offspring have? _____________ 6. Which parent is homozygous for the trait? _____________ 7. Which parent is heterozygous for the trait? _______________ 8. What is a tool we use to trace the occurrence of a trait through families called ______________________? 9. The passing of traits from parents to offspring is called _________? 10. Traits that are inherited with sex chromosomes are ________ 11. An organism receives chromosomes from __________ 12. Characteristics of an organism are called ___________________ 13. When the parents are homozygous dominant and homozygous recessive, all the offspring are____________________________ 14. A type of cell division that produces sex cells ________________ 15. A dominant gene usually shows itself over a ___________________ 16. Inherited traits are controlled by_________________________ 17. An organism with two like genes for a trait is said to be ________________ 18. Most of the genes for sex-linked traits are carried on the _______________ 19. A sperm cell can contain_________________________________ 20. A word that means the same as homozygous is _______ 21. A word that means the same as heterozygous is_______________ 22. A type of cell division that produces body cells _________________ Use the following mutations to tell what happened to the DNA strand. Substitution Deletion Insertion Write the word in the blank 1. GGCCTATTC GGCCATTC 2. AACCGTTA AACCGTTTA 3. TATTCGCGC ________________________ ______________________ TATTGGCGC ________________________ 1. How many children are affected with the trait? ________ 2. How many granddaughters are carriers of the trait? _______ 3. How many grandsons are normal? __________ 4. Which of the parents is the carrier of the disease? ________ 5. How many children do the parents have? _____________