Which of the following applies to organisms, particularly plants and fungi, that have distinct haploid and diploid phases of their life cycles?
A) polyploidy
B) aneuploidy
C) alternation of generations
D) asexual propagation
E) regeneration
Answer: C
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If an Arabidopsis plant does not express homeotic genes during flower development
A. The plant will die. B. The plant will only develop to the heart stage. C. The plant will not develop cotyledons. D. The plant will develop leaves instead of flowers. E. The plant will develop flowers instead of leaves.
Which process exchanges alleles between homologous chromosomes?
a. mitosis b. genetic recombination c. asexual reproduction d. independent assortment e. anaphase
What are the three general types of amino acids?
A) ? helices, ? sheets, and looped segments B) covalent, noncovalent, and van der Waals forces C) positive, negative, and noncharged D) hydrophobic, polar (noncharged), polar (charged) E) acidic, basic, and neutral
Generally, movements are accomplished by:
a. a single muscle exerting a pulling force only. b. a single muscle exerting a pushing force only. c. groups of muscles opposing the actions of one another. d. groups of muscles collectively exerting pulling forces only. e. groups of muscles collectively exerting pushing forces only.