Which of the phylogenetic trees above best demonstrates cladogenesis?





A. Tree 1

B. Tree 2

C. Tree 3

D. Both Tree 2 and Tree 3


D. Both Tree 2 and Tree 3

Biology & Microbiology

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Sexual reproduction gave rise to complex life cycles seen in eukaryotic organisms

A. true B. false

Biology & Microbiology

The primary transcripts in eukaryotes are most accurately described as

A. a faithful copy of the entire gene including exons and introns. B. an exact copy of the gene, but the introns have been removed. C. an RNA copy, but the noncoding exons and introns have been removed. D. having the exons removed and the introns retained for translation. E. composed of RNA polymerase and associated histones.

Biology & Microbiology

The manufacture of fertilizer is an energy-intensive process that uses ________ gas to reduce N2 to NH4+ at high temperature and pressure.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

What is equational division

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology