PCR is a useful technique because A. it makes enough copies to eliminate mutations B. it makes enough copies to study the DNA C. it makes materials needed for unzipping the DNA helix or D. it makes more copies than a restriction map does

What is adaption? A. A characteristic that allows an organism increased fitness for an environment B. A change in characteristics of members of a species in following generations C.

Is best prevented by education-warning pregnant women about the risks of contracting the disease through gardening and contact with litter boxes?

Which of the following would not be considered a renewable resource? a. oxygen b. natural gas c. freshwater d. trees

If a genetically based attraction to beautiful people contributes to survival, that trait will likely be passed on to subsequent generations. This best illustrates A) gender typing. B) natural selection. C) behavior genetics. D) collectivism.

In prokaryotes, a search for genes in a DNA sequence involves scanning the DNA sequence for long open reading frames (that is, reading frames uninterrupted by stop codons). What problem can you see with this approach in eukaryotes?

What can lead to new characteristic in an organism? a. Spontaneous generation b. Mutations c. Enzymes d. Mitosis

Under certain conditions, when a mature plant or seed becomes or remains inactive, it is said to be

How does the amount of energy available change as you move from one trophic level to

Question 3 What is the asthenosphere? The tectonic plates The Earth's crust The lower mantle The molten part of the upper mantle.

What is the semi-solid food found inside the stomach during digestion called?