Which of the following is NOT true of mutations? a) They can take place in body cells or in reproductive cells.

b) They often lead to beneficial variations.

c) They can be caused by X rays.

d) They involve changes to genetic information.

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.

Matched chromosomes carrying information about the same characteristics in the organism are called