The fossil record shows that for many plant and animal groups,the time between speciation events
A) is equivalent to the length of one hundred generations of a species.
B) varies greatly,but averages 6.5 million years.
C) is usually about 50,000 years.
D) is usually greater than 40 million years.
Correct Answer:
Verified
Q4: The emergence of many diverse species from
Q5: Organisms that possess more than two complete
Q6: Which of the following statements about the
Q7: Which of the following types of reproductive
Q8: Which provides the most general and correct
Q10: Under the biological species concept,a species is
Q11: Speciation,or the formation of new species,is
A)an event
Q12: The biological species concept is
A)sometimes difficult to
Q13: Two species that sometimes mate and produce
Q14: Which butterfly has changed gradually but significantly
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