Crossing over usually occurs in which of the following stages of meiosis?
a. prophase I
b. interphase
c. anaphase II
d. metaphase I
e. telophase II
a
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One line of evidence for endosymbiosis is that chloroplasts resemble ____
a. anaerobic bacteria b. aerobic bacteria c. fungi d. protists e. cyanobacteria
Why were the pea plant genes Mendel selected for his experiments particularly suited for the development of his laws of inheritance?
a. The remaining pea plant genes were subject to Lamarckian inheritance. b. The genes had enough genetic distance that linkage could be effectively ignored. c. The genes Mendel selected were the least susceptible to random mutation. d. Other traits he might have selected would require modern lab equipment to measure.
Which of the following is consistent with the principle of base pairing?
a. purine-purine b. pyrimidine-pyrimidine c. adenine-thymine d. guanine-thymine
RNA uses the nitrogenous base ______________, which DNA does not use.
Fill in the blank(s) with the appropriate word(s).