When DNA is cut with a restriction enzyme, the resulting fragments have

A) 5' carboxyls.
B) 5' hydroxyls.
C) 3' hydroxyls.
D) 3' phosphates.
E) 3' carboxyls.


C

Biology & Microbiology

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In honeybees, queen bees are haploid organisms while male drones are diploid

a. True b. False

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One advantage that angiosperms have is a unique triploid ____, a nutritive tissue produced during

fertilization.

a. seed coat b. endosperm c. ovule d. pollen sac e. ovary

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Which of the following is TRUE at the end of telophase I in corn (2n = 20)?

a. Each cell has 20 chromosomes. b. Each chromosome is paired with its homologue. c. Centromeres connect homologous chromosomes. d. Each cell is diploid. e. Centromeres connect sister chromatids.

Biology & Microbiology

The rapid growth of the human population still seen today began in the

A) 1200s. B) 1400s. C) 1700s. D) 1800s. E) 1900s.

Biology & Microbiology