A small part of the human Y chromosome contains the gene that is responsible for determining maleness. What is the name of this gene?
What will be an ideal response?
SRY (sex-determining region Y)
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Parthenogenesis refers to
a. new genetically based traits that arise spontaneously. b. traits that arise through epigenesis. c. live birth by normally egg-laying species. d. the formation of a new individual from an unfertilized egg. e. the origin of a new individual from a male
A one-way relationship in which one species benefits at the expense of another is ____
a. commensalism b. competitive exclusion c. parasitism d. obligate mutualism e. a neutral relationship
Four of the five examples listed below illustrate
mutualism. Select the exception. a. plants and pollinators b. plants and seed dispersal by seed-eating animals c. mycorrhizae d. antibiotics e. lichen
Lungs absorb oxygen from inhaled air, and the small intestine move ingested material through the
digestive tract and absorbs nutrients from ingested food. Which of the following statements describes the type of epithelium you would expect to line each of these surfaces? a. They are both lined by a simple squamous epithelium. b. They are both lined by a simple cuboidal epithelium. c. The lungs are lined by a simple squamous epithelium, and the small intestine is lined by a ciliated columnar epithelium. d. The lungs are lined by a columnar epithelium, and the small intestine is lined by a simple squamous epithelium. e. The lungs are lined by a simple squamous epithelium, and the small intestine is lined by a simple cuboidal epithelium.