Individuals with an XXY karyotype are ________ in humans and ________ in fruit flies.
A) male; male
B) male; female
C) female; male
D) female; female
E) male; intersexual
B) male; female
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Examine Figure 24.2 in your text. Which of the following groups is monophyletic?
A. humans plus chimpanzees and bonobos B. gorillas plus chimpanzees and bonobos C. gibbons plus Old World monkeys D. gibbons plus orangutans E. gibbons plus orangutans plus gorillas
All of the following structures are associated with an intestinal fold except: a. salivary secretions
b. lymph vessel. c. microvilli. d. blood vessel. e. villi.
Which method is often used to analyze proteins and nucleic acids by physical separation when estimating genetic variation in populations?
A) centrifugation B) fluorometry C) in situ hybridization D) electrophoresis E) absorption spectrophotometry
Viruses have typical cellular structure like other living organisms.
Answer the following statement true (T) or false (F)