Who originally identified a highly condensed structure in the interphase of nuclei?
A. Lyon
B. Barr
C. Ohno
D. None of the answers are correct
B
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Tertiary consumers feed directly on _____
a. carnivores b. producers c. herbivores d. parasites e. decomposers
Phylogenetic systems of classification attempt to
reflect __________ relationships among species. a. structural b. morphological c. evolutionary d. biochemical e. genetic
During the preparation of a human genomic library, plasmids containing human DNA fragments are inserted into:a
compatible human cells. b. an antibiotic-resistant strain of E. coli to protect the inserted fragments. c. antibiotic-sensitive E. coli cells that become antibiotic-resistant if transformed. d. bacteriophages. e. mRNA molecules.
The idea that alleles of a particular gene separate independently into individual gametes during meiosis is Mendel's principle of ________.
a. unit inheritance b. segregation c. independent assortment d. dominance