Which of the following is a family of six-pointed, star-shaped viruses that cause gastrointestinal diseases?

A. Picornaviridae
B. Caliciviridae
C. Rhabdoviridae
D. Coronaviridae
E. Filoviridae


Answer: B

Biology & Microbiology

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Was this a pre-mating or post-mating barrier?

a. pre-mating barrier, because individuals do not mate b. post-mating barrier, because hybrids are produced but they do not reproduce c. pre-mating barrier, because fertilization occurs but the hybrids are not viable d. post-mating barrier, because hybrids are sterile and unable to mate

Biology & Microbiology

Cardiac muscle fibers lack striations

____________________ Indicate whether the statement is true or false.

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The difference between taproot and fibrous root systems is that a taproot system:a

consists of many roots of the same size, while a fibrous root system has one main root with lateral roots. b. consists of one main root with lateral roots, while a fibrous root system has many roots of the same size. c. is characteristic of most monocots, while a fibrous root system is usually found in eudicots. d. can be modified for storage, while a fibrous root system cannot. e. is considered adventitious, while a fibrous root system is not.

Biology & Microbiology

Color blindness is a recessive X-linked trait. A normal couple has a color-blind child. Who else in this family is probably color-blind?

A. the child's paternal grandmother B. the child's maternal grandmother or grandfather C. the child's maternal grandmother D. the child's maternal grandfather E. the child's paternal grandfather

Biology & Microbiology