Which of the following represents a difference between eccrine sweat glands and apocrine sweat glands?
a) Eccrine sweat glands are located deeper in the dermis than apocrine sweat glands.
b) Eccrine sweat glands use exocytosis to make secretions, while apocrine sweat glands do not.
c) Eccrine sweat glands begin to function at puberty, while apocrine sweat glands function throughout life.
d) The secretions of apocrine sweat glands contain more fat and protein than do the secretions of eccrine glands.
Answer; d) The secretions of apocrine sweat glands contain more fat and protein than do the secretions of eccrine glands.
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Which of the following is a good example of two genes that are orthologous?
A) the promoter and the repressor genes of the lac operon in E. coli B) the genes for the first two enzymes in the glycolytic pathway C) the gene for the photosynthetic enzyme RuBisCO in a fern and in an oak D) the human gene for the cell surface protein Siglec-12, and the human pseudogene Siglec-13 E) None of these pairs are orthologous.
Obesity is exceeding the body mass index of 20 or greater.
a. true b. false
What species concept is most useful for categorizing cryptic species, where multiple species are found in the same location, are visually very similar, and occupy the same niche, but DNA evidence suggests there are several monophyletic lineages with no gene flow between them.
A. phylogenetic species concept B. biological species concept C. visually similar cryptic species excludes morphological species concept morphological species concept D. ecological species concept
Which of the following genes would most likely play a role in promoting kin selection?
A. the genes important for the development of large antlers in the caribou B. Major Histocompatibility Complex (MHC) genes -- allow mammals to recognize related individuals C. SRY -- the gene that initiates male sex determination D. wingless -- critical for the formation of wings in fruit flies