Heredity Worksheet With Answers Page 5
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1122. The diagram below shows the relationships between animals in the order Crocodilia. Each
branch of the cladogram indicates a common ancestor. Which two animals would have the
strongest genetic relationship?
Tuataras
Lizards
Snakes
Crocodiles
Birds
a. Snakes and tuataras
b. Crocodiles and snakes
c. Birds and crocodiles
d. Lizards and tuataras
Questions #23-25 refer to the following scenario:
Pod shape in pea plants can be inflated or constricted, with inflated (I) being dominant over constricted
(i).
23. A pea plant displays inflated pods but has an unknown genotype. What possible genotypes
could the plant have?
a. II
b. Ii
c. ii
d. Either a or b.
24. With what plant should it be crossed in order to determine the correct genotype?
a. II
b. Ii
c. ii
d. Either a or b.
25. What is this type of procedure called?
a. Testcross
b. Dihybrid cross
c. Epistasis
d. Mendelian cross
AP Biology
Heredity
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