Based on the figure, which of the following statements is most likely accurate?



A. HIV arose more than once.

B. HIV and SIV are not genetically related.

C. The SIV strains will all have more sequence similarity with each other than with any of the HIV groups.

D. SIV only arose once.

E. HIV groups M, N, and O will be more similar to each other than to SIV.


A. HIV arose more than once.

Biology & Microbiology

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In many marine systems, the carbon and oxygen cycles are directly proportional to each other

Indicate whether the statement is true or false.

Biology & Microbiology

You discover a rare plant with white flowers that open at night and have a long, narrow floral tube. In developing a conservation plan for this species, what other organisms should you particularly focus on protecting in order to ensure this plant's continued reproductive success?

A. hummingbirds. B. bats. C. moths. D. butterflies. E. bees.

Biology & Microbiology

The great size and mobility of the vertebrates are likely the result of

A) uterine development of offspring. B) increased brain size and complexity. C) lungs used for respiration. D) four-chambered hearts. E) lightweight endoskeletons.

Biology & Microbiology

lower part of the uterus

What will be an ideal response?

Biology & Microbiology