Trisomy 21, also known as down syndrome, is an example of a disease that results from

a. telophase

b. nondisjunction

c. independent assortment

d. crossing-over

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

For each of the following, decide whether the statement describes photosynthesis, cellular respiration, or both. releases energy in the form of atp. stores energy in glucose molecules. performed by producers. performed by consumers.

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata