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.Despite an abundance of habitat, why will it be difficult for the human species to recover?
A. Related humans are not able to reproduce.
B. The reduced genetic diversity will make it difficult for the population to adapt to new diseases or other environmental changes.
C. Modern humans lack the ingenuity needed to survive without an extended social network.
D. The founder effect will slowly kill off the survivors in a small population.
Answer: B
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Which of the following are generally not lethal to the individual in which they occur?
a. duplications and deletions b. inversions and translocations c. inversions and deletions d. translocations and duplications e. all four of these are lethal
Which of the following is associated with the phylum Annelida?
a. radial symmetry b. ctenidia c. chaetae d. radula
Stringent safety rules are not necessary for recombinant DNA research because it is a natural process that occurs in the absence of human intervention
Indicate whether the statement is true or false
What is the major difference in the termination stage of translation between prokaryotes and eukaryotes?
A. There are two termination factors in prokaryotes (RF1 and RF2) and only one factor in eukaryotes (eRF). B. There is no stop codon in prokaryotes while a stop codon is necessary in eukaryotes. C. Ribosomal subunits dissociate in prokaryotes, but remain intact in eukaryotes. D. There is one stop codon in prokaryotes (UAG) and three in eukaryotes (UAA, UAG, UGA). E. mRNA remains connected to the small ribosomal subunit (30S) in prokaryotes, but is released from the small ribosomal subunit (40S) in eukaryotes.