Explain the correct sequence of structures that a molecule of oxygen will pass through or over as it moves from the nostrils to the alveolus.
What will be an ideal response?
The correct sequence of airflow is: nostril, nasal cavity, pharynx, glottis, larynx, trachea, bronchus, bronchiole, alveoli.
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T4 and other bacteriophages commonly use a method of DNA replication and packaging called "headful packaging."
Explain how viral genomes are replicated and packaged in this process and hypothesize how headful packaging might affect evolution of BOTH the bacteriophages and their prokaryotic hosts. What will be an ideal response?
Define the following terms: • Coastal plain estuary • Tectonic estuary • Fjord
What will be an ideal response?
Gene flow has a greater effect on large populations than on small populations
a. true b. false
It is clearly established that obesity has greatly increased in children over the last several decades in the United States. While several genes have been identified that increase the potential for obesity, environmental influences are also involved
Which of the following is most likely? A) There is little or no gene–environment interaction. B) Phenotypic variation is discontinuous. C) There is a small overlap of phenotypic ranges of different genotypes. D) There is a wide range of phenotypes with each genotype. E) There is a demonstrable threshold of environmental effects.