Which of these haploid strains produces permease but does not produce ?-galactosidase?
A) I – P+ O+ Z+ Y+
B) I+ P+ O+ Z – Y+
C) I – P+ O+ Z – Y –
D) I+ P+ O – Z+ Y+
E) I – P+ O+ Z+ Y –
B
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A vascular bundle
A. contains xylem and phloem. B. is not found in leaves. C. is usually scattered in the stem of a eudicot. D. is on the outer surface of a root. E. is very distinct in the apical meristem.
During ____, microtubules disassemble, pulling the chromatids to the ends of the spindle
a. prophase b. interphase c. anaphase d. metaphase e. telophase
The nontranscribed region of DNA to which RNA polymerase binds to initiate transcription is called the ________.
A. intron B. operon C. operator D. exon E. promoter
Assuming the species to be diploid, the notation Ab would be used to represent _____.
A) a gamete from a dihybrid cross B) an individual from the F1 generation C) a heterozygous parent D) an individual displaying both dominant phenotypes E) this notation would never be encountered