What is the best test of an evolutionary classification?
Answer:
comparing
dna
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The predominant organisms in vaginal secretions from normal prepubescent girls and postme-nopausal women are:
a. lactobacilli. b. S. agalactiae. c. Enterobacteriaceae. d. staphylococci.
The function of upstream promoter elements in eukaryotes, such as enhancers and silencers, is to:
a. serve as binding sites for RNA polymerase. b. regulate the efficiency of transcription initiation. c. regulate RNA polymerase binding to the TATA box. d. encode enhancer and silencer proteins. e. add methyl groups to genes.
A woman who becomes obese during pregnancy runs the risk of all the following pregnancy complications EXCEPT
A. miscarriage B. stillbirth C. neonatal death D. spina bifida
Which of the following organelles are incorrectly paired with their location within the cell?
a) cilia - on the cell surface b) nucleolus - within the nucleus c) microtubules - within the cytoplasm d) smooth endoplasmic reticulum - within the cytoplasm of the cell e) golgi apparatus - on the cell surface