In the life cycle of a zygomycete, after the zygospore is formed, the next event will be
A. dikaryon formation.
B. mitosis.
C. meiosis.
D. plasmogamy.
E. karyogamy.
Answer: C
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Transcription in prokaryotes is carried out by ______, which unwind(s) and transcribe(s) the gene.
A. RNA synthetase B. RNA polymerase II C. RNA polymerase III D. transcription factors E. RNA polymerase
What term correctly describes change in allele frequency due to random effect of a small population?
A. mutation B. selection C. non-random mating D. genetic drift E. immigration
What is the name of the third germ layer that forms during gastrulation? (Figure 29-4)
a) primitive streak b) mesoderm c) embryonic disc d) ectoderm e) endoderm
Operons ___________________________
(a) are commonly found in eukaryotic cells. (b) are transcribed by RNA polymerase II. (c) contain a cluster of genes transcribed as a single mRNA. (d) can only be regulated by gene activator proteins.