Download Name: : ___________Period

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? _____________