Mammalian genomes all have a number of genes for globin polypeptides. Several of these genes are functional, but several are never expressed. What are the nonfunctional ones known as?
What will be an ideal response?
pseudogenes
Biology & Microbiology
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The largest documented mass extinction on Earth occurred:
A. 252 million years ago. B. 25 million years ago. C. 6.5 million years ago. D. 65 million years ago. E. 650 million years ago.
Biology & Microbiology
Energy losses are multiplied in successive energy transfers in a food web
Indicate whether the statement is true or false.
Biology & Microbiology
Which process is responsible for moving bulk cellular wastes across the cell membrane?
A. diffusion B. endocytosis C. pinocytosis D. osmosis E. exocytosis
Biology & Microbiology
Unwinding the double helix to separate the parental strands requires a
A. primase. B. DNA ligase. C. DNA polymerase. D. topoisomerase. E. helicase.
Biology & Microbiology