A DNA microarray is ____

a. used for gel electrophoresis
b. used identifying fragments of genes using a labeled probe
c. linked to self-replicating vectors to create recombinant DNA molecules
d. a series of long mRNA sequences placed on a solid support and has several uses
e. a series of short nucleotide sequences placed on a solid support and has several uses


e

Biology & Microbiology

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Fetal hemoglobin carries ________ percent more oxygen than adult hemoglobin.

A) 5 to 10 B) 20 to 30 C) 50 to 60 D) 80 to 90

Biology & Microbiology

The methylation and demethylation of regions

of DNA triggered by changes in the environment and resulting in phenotypic changes are an example of

a. pleiotropy. b. environmental effects. c. epistasis d. epigenesis. e. more than one of these

Biology & Microbiology

Which phylum is a member of the Radiata?

a. Porifera b. Nemertea c. Rotifera d. Ctenophora

Biology & Microbiology

Organs form and begin to function during the ____ period.

A. embryonic B. amniotic C. fetal D. chorionic E. gastrulation

Biology & Microbiology