What causes the annual growth rings of trees?

A. Residual bark left over when the trunk of the tree expands
B. Damage caused by fungi that occurs during the wetter months
C. Different growth rates at different times of the year
D. Sugars left over from the previous summer


Answer: C

Biology & Microbiology

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The two stages in meiosis where the most genetic recombination occurs

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When yeast cells are cultured in the presence of both glucose and galactose, the GAL genes are

A) transcribed and then translated. B) transcribed but not translated. C) neither transcribed nor translated. D) translated but not transcribed. E) transcribed and translated simultaneously.

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Long coding RNAs (lnc RNAs) are characterized by:

a. the presence of introns. b. the lack of a polyA tail. c. their roles in regulating transcription. d. being less than 100 bases in length. e. binding to zinc finger transcription factors.

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Briefly state what is meant by repetitive DNA

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Biology & Microbiology