Microevolution describes the evolution of populations, while speciation describes the emergence of new species over long periods of time.
a. true
b. false
Ans: a. true
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Which of the following questions might be answered by using the method described?
A) How many cells are produced by the culture per hour? B) What is the length of the S phase of the cell cycle? C) When is the S chromosome synthesized? D) How many picograms of DNA are made per cell cycle? E) When do spindle fibers attach to chromosomes?
A moistened swab rubbed onto a person's forearm then onto a nutrient agar plate with 7.5% NaCl would MOST likely result in the isolation of ________ spp
A) Clostridium B) Halobacterium C) Sarcina D) Staphylococcus
If an allele is inherited on the X chromosome, but not the Y, it is said to be an example of ________
A. autosomal inheritance B. X-linked inheritance C. chromosome theory of inheritance D. homogametic sex E. heterogametic sex
A typical sponge is best described as a
A) slow-moving suspension feeder with a true coelom. B) sessile suspension feeder with bilateral symmetry. C) slow-moving carnivore with no true tissues or symmetry. D) sessile suspension feeder with no true tissues or body symmetry.