One of two genetically identical chromosomal units that are the result of DNA replication and are attached to each other at the centromere.

What will be an ideal response?


sister chromatids

Biology & Microbiology

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A 22-year-old woman is experiencing a malodorous greenish-yellow vaginal discharge. The pH of the discharge is 6.  A microscopic exam of a drop of the discharge shows eukaryotic microorganisms with flagella. What is the most likely diagnosis?

A. Trichomoniasis B. Bacterial vaginosis C. Candidiasis D. Sporotrichosis E. Giardiasis

Biology & Microbiology

A bulbourethral gland secretes

A) sperm. B) a mucus-like fluid. C) blood. D) saliva.

Biology & Microbiology

Species of Streptococcus and Staphylococcus produce_____, substances that are toxic to white blood cells, including phagocytes

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of the following would likely exclude a sequence from being considered as an active gene?

A) a promoter with signals identical to the promoter of another gene B) exons in different reading frames from one another C) an exon followed by 3? processing signals D) only one exon with an in-frame stop codon E) introns missing the GT-AG splice junctions appropriate for this gene

Biology & Microbiology