The main purpose of preparing karyotypes is to ____
a. prepare for gene extractions
b. determine gender
c. determine which genes are on which chromosomes
d. separate DNA into its component parts
e. diagnose or rule out certain genetic disorders
e
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You discover a new species of ape that looks like a gorilla but walks upright. How would you change the phylogeny above?
A. no change, because only molecular data are considered when studying evolutionary relationships B. no change until a fossil of the new species is found because fossil evidence is a required component of the data set C. I would group gorillas with humans based on the synapomorphy (shared trait) of upright walking. D. I would branch the gorilla lineage and add the new species with the defining trait "upright stance".
Which of the following is NOT a characteristic of shade leaves on a plant?
A. more chlorophyll production B. less mesophyll tissue C. more air spaces D. lacking an epidermal layer E. lacking mesophyll tissue
Untreated gonorrhea in males may lead to
A. sterility. B. urinary tract infections. C. prostatic abscesses. D. orchitis. E. All of the choices are correct.
Oils are
a. liquid at room temperature. b. unsaturated fats. c. found only in animals. d. complex carbohydrates. e. both liquid at room temperature and unsaturated fats