The end of the ________ era was marked by a transition into an explosion of life-forms rather than an extinction event
A) Precambrian B) Paleozoic C) Jurassic D) Mesozoic
Refer to the scenario below, and then answer the following question(s).
You are the managing naturalist for a natural history museum that has just received a batch of fossils from one of the field paleontologists sponsored by the museum. The note in the box states the fossils all came from the same rock layer. The museum is organized according to geologic timescale, and its management needs you to tell them to which department (based on era) and period specialist (an individual with experience with life-forms of a particular geologic-timescale period) the fossils should go. You find fossils of fish and seed-bearing plants but no reptiles or higher animals and no flowering plants.
Answer: A
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The advantage(s) of second-generation DNA sequencing compared to the Sanger method are the result of
A) miniaturization of reaction size. B) increased computing power. C) increased length of DNA sequences obtained. D) miniaturization of reaction size and increased computer power.
What type of evolution is this?
English ivy (Hedera helix) and wintercreeper (Euonymus fortunei) both have aerial rootlets that allow them to climb up and stick to bark on trees. As you can tell from their scientific name these plants are not closely related, but yet they have both evolved similar morphological structures used for the same purpose. A. Analogous. B. Convergent. C. Radial. D. Bivalent. E. Both analogous and convergent.
You prepare the first ever karyotype of an endangered species of frog. Upon examination you find that all the chromosomes are metacentric. This is going to make it difficult to identify
A. which is the p arm of the chromosome. B. which is the q arm of the chromosome. C. the unique G banding for each chromosome. D. if the chromosomes are telocentric. E. both the p and q arms of the chromosome.
The process of seeking an answer in science is often called the scientific method.
Indicate whether the statement is true or false. A. True B. False