Two populations of birds with somewhat different coloration live on opposite sides of a peninsula. The habitat between the populations is not suitable for these birds. When birds from the two populations are brought together, they produce young whose appearance is intermediate between the two parents. These offspring will breed with each other or with birds from either parent population, and all offspring of these pairings appear intermediate to various degrees. The two populations are _____.
A. different subspecies, under the morphological species concept
B. different species, under the biological species concept
C. different species, under the phylogenetic species concept
Answer: A. different subspecies, under the morphological species concept
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A DNA chip that contains rows of DNA sequences for mutations that indicate the presence of particular genetic disorders is representative of what type of biotechnology?
A. gel electrophoresis B. PCR C. gene pharming D. DNA microarrays E. DNA fingerprinting
According to the logistic growth model, what happens to a population when the size of the population reaches carrying capacity?
A) The growth rate increases. B) The growth rate decreases. C) The growth rate cannot be determined. D) The growth rate is zero.
Transcription in prokaryotes is carried out by ________, which unwind(s) and transcribe(s) the gene.
A. transcription factors B. RNA polymerase III C. RNA polymerase II D. RNA polymerase E. RNA synthetase
How do glomeromycetes differ from basidiomycetes?
What will be an ideal response?