Which species of wheat is the first polyploid in the
sequence?
a. A
b. B
c. C
d. D
e. E
Answer: c
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During metaphase I of meiosis, genetic information is exchanged between two homologous chromosomes, resulting in new combinations of alleles. This process is called ________.
A. shuffling B. spermatogenesis C. homology D. crossing-over E. oogenesis
Complement proteins are part of ________ immunity.
A. adaptive B. innate
Uranium-235, with a half-life of 713,000,000 years, decays to Lead-207. If a rock sample is determined to have one-quarter of the uranium-235 content it had when it formed, the age of the rock sample can be estimated to be approximately __________ years old.
A. 28.5 billion B. 713. million C. 1.4 billion D. 178 million
What are the advantages of bipedalism?
A. Enables an adult to carry an offspring easier. B. Allows the hands to be free for tool use. C. Would allow the individual to spot danger further away. D. Would have allowed males to forage for food more efficiently. E. All of these are advantages of bipedalism.