Linnaeus developed his classification system for organisms according to

A. fixity of species and the sequential ladder of life.
B. Lamarck's theory of evolution.
C. a theory of descent by modification.
D. Darwin's theory of evolution.


Answer: A

Biology & Microbiology

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Which observation(s) of the medium ground finch (Geospiza fortis) by Peter and Rosemary Grant verify Darwin's selection hypothesis? Check all that apply.  

_____  Considerable variation existed in the beak size and shape of this finch. _____  The medium ground finch showed assortative mating according to beak size and shape. _____  Beak shape (depth) varied with the dryness of the year. _____  Offspring were similar to parents in beak size and shape.

Biology & Microbiology

As scientists began to purify and analyze RNA, it became apparent that rRNA and tRNA were modified. Whichtechnique allowed them to separate the various nucleotides so they could analyze the modifications?

A. polyacrylamide electrophoresis B. agarose gel electrophoresis C. thin-layer chromatography D. sucrose gradient centrifugation E. mass spectrophotometry

Biology & Microbiology

Which of the following tree stands would you predict has the highest NPP?

A) 0-1 years old B) 1-10 years old C) 30-60 years old D) over 100 years old

Biology & Microbiology

Sexual reproduction allows for

A) random mutations to occur at a faster rate than does asexual reproduction. B) greater genetic diversity in offspring compared to asexual reproduction. C) clones of parent cells to be produced more quickly and efficiently than does prokaryotic fission. D) haploid individuals to pass their genes on to the next generation.

Biology & Microbiology