Four of the five choices listed below relate to
speciation. Select the exception.
a. postzygotic
b. allopatric
c. parapatric
d. punctuation
e. sympatric
Answer: a
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The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which trait is least informative of phylogenetic relationships within the group?
A. A
B. B
C. C
D. D
E. E
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about cladistics?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
As mature adults, male squid have a modified tentacle that carries their sperm. Sperm are
produced in testes and transferred to this modified appendage prior to mating. During courtship and mating, the male will insert this tentacle into a structure know as the mantle cavity of a female, where the eggs are waiting. Fertilization occurs within this body cavity. Which of the following is true about this scenario?
a. Internal fertilization occurs. b. External fertilization occurs. c. These animals have an amniotic egg. d. both (a) and (c)
A mutation in the human gene for a fibroblast growth factor receptor (FGFR) appears to be responsible
for ____.
a. Duchenne muscular dystrophy b. phenylketonuria c. achondroplasia d. sickle-cell anemia e. cystic fibrosis
Which of the following conditions is not known to be a cause of kidney failure?
a. exposure to lead, arsenic, or pesticides b. complications of diabetes c. high blood pressure d. fever from influenza