Seeds allowed plants to colonize dry land

Indicate whether the statement is true or false


TRUE

Biology & Microbiology

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How many checkpoints occur during interphase prior to a cell entering mitosis?

a. one b. two c. three d. four

Biology & Microbiology

Klinefelter syndrome in humans, which leads to underdeveloped testes and sterility, is caused by which chromosomal condition?

A) 45, X B) 47, 21+ C) triploidy D) 47, XXY E) 47, XYY

Biology & Microbiology

Which statement about dinosaurs is FALSE?

a. Some species lived in social groups and hunted in packs. b. Dinosaurs were all slow-moving, with relatively low metabolic rates. c. Fossils of dinosaurs with feathers suggest that feathers first evolved to provide insulation. d. Dinosaur social behaviors include courtship rituals and parental nurturing of the young. e. Dinosaurs underwent an extensive radiation throughout the Jurassic and Cretaceous periods

Biology & Microbiology

You work for a pharmaceutical company that designs small RNAs, used to control expression of disease genes. The primary focus area of your research should be

A. translational activation. B. transcriptional repression. C. transcriptional activation. D. translational repression.

Biology & Microbiology