Different forms of the same gene are referred to as __________.
a) alleles
b) homozygous
c) heterozygous
d) Haploid
Ans: a) alleles
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In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a single species dominated the field. A possible factor in this secondary succession was _____
A) equilibrium B) facilitation C) immigration D) inhibition E) parasitism
The geneticist who discovered the white eye mutation in Drosophila and helped establish that genes are carried on chromosomes was
A. Mendel. B. Sutton. C. Sturtevant. D. Janssens. E. Morgan.
Different chemotherapeutic drugs can do each of the following except
A) inhibit metabolic pathways required for DNA synthesis. B) chemically cross-link DNA strands. C) inhibit DNA topoisomerases required for DNA replication. D) disrupt spindle microtubules. E) Chemotherapeutic drugs can do all of the above.
Some of the unique adaptations of angiosperms include their beneficial relationships with ________ and their relatively ________
A) animals; dominant gametophyte generation. B) animals; rapid fertilization and seed production C) fungi; large sporophyte D) fungi; well-developed vascular system