Which of the following is found at the end of a eukaryotic chromosome?
A. Telomeres
B. Centromeres
C. Kinetochores
D. Origins of replication
A
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Choose the true statements about the human and chimpanzee genomes.
_____ A comparison of genomes confirms that humans and chimpanzees are closely related species. _____ Very few mutations differentiating the two genomes occur in coding DNA. _____ Some insertion-deletions (indels) lead to loss of function changes in the two genomes. _____ More similarity exists between the genomes of human and mouse than between human and chimpanzee. _____ The estimated genome sizes and number of genes is very different in humans and chimpanzees.
Which of the following is also known as infectious hepatitis?
A) hepatitis A virus B) hepatitis B virus C) hepatitis C virus D) hepatitis D virus
A behavior that benefits others at a cost to oneself is
A. cooperation. B. altruism. C. benevolence. D. symbiosis. E. All of these choices are correct.
Would there be a cost of sex if sexual reproduction was isogamous?
a. No, females would not pay the twofold cost of sex. b. Yes, sex may break up coadapted gene complexes. c. No, females would still transmit the same proportion of their genes to the next generation. d. Yes, despite contributing the same proportion of offspring as asexual fe-males, isogamous sexual females would only transmit half the proportion of their genes to the next generation.