A zombie apocalypse wipes out almost the entire human species before the zombie threat is eliminated. Only a group of 100 people who were at a family reunion on an uninhabited island survived. They returned to the mainland completely unaware of what had happened to everyone. Answer the following question(s) regarding the few survivors who now begin to rebuild the human population.Which of the following processes is most likely to occur on this small population of humans?
A. Gene flow
B. Sexual selection
C. Genetic drift
D. Mutations
Answer: C
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Answer the following statements true (T) or false (F)
1. DNA helicase and topoisomerase are similar insofar as they promote the unwinding and uncoiling of DNA. 2. If the sequence for one strand of DNA is 3?-TCGATT-5? then its complementary strand would have a sequence of 3?-AGCTAA-5?. 3. Okazaki fragments are sequences of DNA most often found on the lagging strand of DNA during DNA replication. 4. The progressive shortening of telomeres in DNA correlates with cell senescence.
A high proportion of the food that cattle eat cannot be digested by cattle
a. True, cattle have large saclike pouches that house plant-digesting microbes. b. False, cattle are herbivores and thus produce the necessary enzyme to digest plant material. c. True, this is why cattle have to eat large amounts of food, because most passes undigested through their gut. d. False, cattle eat highly nutritious plants that are readily digested
Males are more commonly affected by X-linked recessive genetic disorders than females because ____
a. females have two X chromosomes; therefore, they do not inherit recessive alleles b. males have only one X chromosome; therefore, they express all recessive X-linked traits c. males have only one X chromosome; therefore, they have multiple alleles for each X-linked gene d. Y chromosomes cause X-linked gene mutations e. males are genetically weaker than females
To produce a split-brain individual, an operation
would need to cut the a. corpus callosum. b. reticular formation. c. hypothalamus. d. fissure of Rolando. e. pons.