Which of these model organisms are not expected to achieve Hardy–Weinberg equilibrium?
a. fruit fly
b. nematode worm
c. bacteria
d. mouse
e. zebrafish
C
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Which of the following is not true of mammals?
A. They feed their young with mammary glands. B. They all have live births instead of laying eggs. C. They all have hair. D. They are vertebrates.
Genes that help to control body weight encode the proteins
A) fibrin, fibrinogen, and hemoglobin. B) collagen, elastin, and dystrophin. C) estrogen, testosterone, and progesterone. D) leptin, ghrelin, and the melanocortin-4 receptor.
Plants connected by mycorrhizal fungi:a
must be of the same species. b. can only exchange carbon dioxide in one direction. c. are an excellent example of a parasitic relationship. d. compete for light. e. exchange organic materials in both directions.
Which theory states that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and
ultimately evolved mutualistic relationships with the host cell? a. endosymbiont theory b. heterosymbiont theory c. obligative symbiotic theory d. facultative symbiotic theory e. autotrophic symbiotic theory