When two or more genes from the same genome have nucleotide sequences so alike that they most probably arose from gene duplication those genes are called ________.

A. orthologs
B. paralogs
C. duologs
D. homologs


Answer: B

Biology & Microbiology

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It is customary to use _______ to represent the genotypes of individuals.

What will be an ideal response?

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

Most helminthic parasites spend at least some part of their life cycle in the

A) genitourinary tract. B) skin. C) respiratory tract. D) cardiovascular system. E) gastrointestinal tract.

Biology & Microbiology

Solutes move from a ____concentration to a ____ concentration during active transport.

a. high; low b. low; high c. high; equilibrium d. low; equilibrium

Biology & Microbiology