Genetic elements in bacteria form _______________
a. the nucleoid
b. plasmids
c. the nucleus
d. both the nucleoid and plasmids
D
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A fruit is a mature:
A. ovary. B. ovule. C. stigma. D. stem. E. pollen grain.
Evolution at the genomic level involves changes in
A. chromosome structure and number. B. sequences of amino acids in proteins. C. sequences of nucleotides in RNA molecules. D. incorporation of new organelles such as the mitochondrion. E. DNA and histone relationships.
Nitrates and nitrites are used in cured meats to prevent ________.
A. botulism intoxication B. S. aureus food poisoning C. infection from fruits and nuts D. mold growth
According to the biological species concept, for speciation to occur, _____
A) the number of chromosomes in the gene pool must change B) changes to centromere location or chromosome size must occur within the gene pool C) large numbers of genes that affect numerous phenotypic traits must change D) at least one gene, affecting at least one phenotypic trait, must change