What is the difference between gene and chromosomal mutations

1. Which of the following appeared on Earth most recently? a. chordates b. tetrapods c. dinosaurs d. single-gene algae 2. Dinosaurs appeared before a. mammals b. photosynthesis c. chordates d. land plants

List eight major classes of primary outdoor pollutants

With which organisms would you like to play?

Which values are equivalent to the fraction below? 2^5/2^9 A-1/16 B-2^14 C - (1/2) ^4 D-2^-4 E - (1/2) ^45 F-2^4

Mastering biology why is a frameshift missense mutation more likely to have a severe effect on phenotype than a nucleotide-pair substitution missense mutation in the same protein?

Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. Eliminate C) osmosis. D) a passageway.

As ocean water in a tide pool warms and evaporates, the remaining water becomes a. cooler. b. saltier. c. calmer. d. darker.

Drake is comparing time people spend playing games on Xbox versus Playstation. In his study, individuals ages 10 - 15 are given Xbox's and individuals ages 16 - 25 are given Playstations.

How do scientists obtain knowledge about the world? Check all that apply.

What would the temperature of the surface be if the Earth did not have an atmosphere?