How are open reading frames identified in a genome?

A) promoters
B) start and stop codons
C) transposons
D) single-nucleotide polymorphisms
E) short tandem repeats


B) start and stop codons

Biology & Microbiology

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In a study of concordance, a sample of identical twins were evaluated for adult-onset diabetes. The data below were collected for this trait:

(1) in 36 identical twin pairs, both showed adult-onset diabetes (2) in 40 identical twin pairs, only one showed adult-onset diabetes (3) in 336 identical twin pairs, neither showed adult-onset diabetes Items (1) and (2) can be used to calculate concordance as follows: 36/(36 + 40) x 100 = 47%. A. true B. false

Biology & Microbiology

Trichomoniasis is a bacterial infection that is sexually transmitted; chronic infection often results in blindness, damage to the nervous system, and eventually death

Indicate whether the statement is true or false

Biology & Microbiology

________ is/are able to degrade infecting bacteriophage DNA, thus protecting the host cell.

A. Restriction endonucleases B. Protection exonucleases C. Modification methylases D. Lysozyme

Biology & Microbiology

Agglutination tests make use of the fact that

A) antibodies have two antigen-binding sites and will cause clumping when bound to antigen. B) the presence of antibodies in a patient's serum will prevent viral infection of cells in culture. C) a reporter enzyme can be bound to an antibody to provide a visual change with a positive test. D) antibodies bound to antigen will precipitate in a gel matrix. E) T cells will release interferon-gamma during certain infections.

Biology & Microbiology