If a cell contains 20 chromosomes, how many chromatids will be present during prophase?

A) 30 B) 20 C) 40 D) 5


Answer: C

Biology & Microbiology

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The single greatest reservoir(s) of carbon exist(s) in ____

a. the atmosphere b. land food webs c. the ocean d. rocks and sediments e. marine organisms

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This animal has water-proof eggs, gives live

birth, and nourishing its young with milk from glands. This animal is

a. a turtle. b. a shark. c. a platypus. d. a rat. e. more than one of these

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Which of the following flower parts develops into a seed?

A) ovule B) ovary C) stamen D) carpel

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The information used to make proteins is encoded by the:

A) number of different chromosomes. B) repeating sugar and phosphate molecules in DNA. C) four bases A, T, G, or C. D) 20 different amino acids of proteins.

Biology & Microbiology