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
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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
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
Which phylum is a member of the Radiata?
a. Porifera b. Nemertea c. Rotifera d. Ctenophora
Organs form and begin to function during the ____ period.
A. embryonic B. amniotic C. fetal D. chorionic E. gastrulation