Changes in DNA sequence from one generation to the next may result in offspring that are altered in fitness compared with their parents. The process of change and selection over the course of many generations is the basis of __________
(a) mutation.
(b) evolution.
(c) heredity.
(d) reproduction.
(b)
Biology & Microbiology
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What is the role of DNA in living things?
a. DNA stores the information required to make proteins. b. DNA produces food for cells. c. DNA produces energy for cells. d. DNA directs the production of proteins.
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Select the bones that make up each pectoral girdle.
A. Humerus B. Coxal bones C. Scapula D. Carpal bones E. Clavicle
Biology & Microbiology
The principal component of the cell walls of both Gram-positive bacteria and Gram-negative bacteria is _______.
a. chitin b. cellulose c. peptidoglycan d. lipopolysaccaride
Biology & Microbiology
At metaphase I, homologous chromosomes are connected only at what structures?
a. Chiasmata b. Recombination nodules c. Microtubules d. Kinetochores
Biology & Microbiology