Yellow marrow can convert back to red
a. true
b. false
Answer: a. true
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What is the gender of the person indicated in the photograph?
A. Female B. Male C. Cannot be determined
Which of the following is not a function of the Drosophila Sxl protein?
A. prevention of the splicing machinery from recognizing the splice junctions of the E1 or L3 exons of the Sxl mRNA B. mediation of alternative splicing that produces transcripts for functional Tra protein C. binding specifically to the regulated 3' splice site of the tra transcript D. mediation of the splice variant of the dsx transcript leading to repression of female-specific genes
How long ago did Neanderthals go extinct?
a. 30,000 years ago. b. 100,000 years ago. c. 500,000 years ago. d. 1 000,000 years ago. e. 2,000,000 years ago.
The earliest microbial fossils that have been found are dated from approximately 4.5 million years ago.
Answer the following statement true (T) or false (F)