Based on the cladogram, birds are most closely related to



A. snakes.

B. dinosaurs.

C. crocodiles.

D. mammals.

E. amphibians.


B. dinosaurs.

Biology & Microbiology

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The extraembryonic membrane that secretes fluid around the developing embryo is the

a. allantois. b. amnion. c. chorion. d. yolk sac. e. both the allantois and the yolk sac.

Biology & Microbiology

____________ mutations are the underlying cause of most types of cancer

A. X-linked D. Y-linked B. Somatic E. Mitochondrial C. Viral

Biology & Microbiology

The contractile proteins that are located in myofibrils are called ________ and ________

Fill in the blank(s) with correct word

Biology & Microbiology

Trypanosomiasis is also known as

a) amebic meningoencephalitis. b) mad cow disease. c) sleeping sickness. d) lockjaw.

Biology & Microbiology