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Large numbers of ribosomes are present in eukaryotic cells that produce

Which of the following is a characteristic of tundra?

How is binary fission similar to mitosis with cytokinesis?

The figure shows a simplified phylogeny of closely related species of primates. This tree was proposed by comparing DNA sequence changes in the gene for cytochrome oxidase subunit II. The vertical scale represents time and the branch points represent common ancestors. What species did ancestor B give rise to?

What is illustrated by the amino acid sequence of the p53 protein in the figure below?

A plot of population size vs time that displays a J-shape is indicative of

Which cause of habitat destruction is fastest-growing and most destructive?

The process by which soil bacteria convert NH3 or NH4 to nitrate (NO3-) is called

GGG and GGC are codons for the amino acid, glycine. A mutation caused the insertion of a cytosine in place of the third guanine during DNA replication. Over many generations the DNA changes so that the frequency of GGC is similar to that of GGG. What effect does this mutation have on the population’s mean fitness?

A tropical deciduous forest, a hot desert, and the tundra are examples of