Some flowering plants cannot self-pollinate which increases their tendency to mate with phenotypically different mates, a process called disassortative mating. What effect would this have on a population in Hardy-Weinberg equilibrium?
A. A decrease in heterozygotes would be observed.
B. No change homozygotes or heterozygotes would be observed.
C. The population would remain in Hardy-Weinberg equilibrium.
D. An increase in heterozygotes would be observed.
E. An increase in homozygotes would be observed.
Answer: D
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As you and a friend are entering a chemistry laboratory at your university, you see a sign that states: DANGER—RADIOACTIVE ISOTOPES IN USE. Your friend is an accounting major and has not had any science courses yet. She asks you what a radioactive isotope is and you respond correctly with:
A. Radioactive isotopes are atoms that are unstable and as a result emit energy in a process called radioactive decay. B. Radioactive isotopes are atoms that are stable and as a result emit energy in a process called radioactive decay. C. Radioactive isotopes are atoms that are stable and as a result only emit energy if they are exposed to higher temperatures. D. Radioactive isotopes are atoms that are unstable but unless actively disturbed by some chemical process will remain intact and pose no problems.
The process of cell division associated with growth is called __________
a. mitosis b. transcription c. development d. zygote
Arteries
a. are under greater pressure than veins. b. are thinner than veins. c. carry blood toward the heart. d. have valves to prevent backflow.
What nitrogenous bases is found in DNA but not in RNA?
What will be an ideal response?