You are a researcher who wants to inactivate the gene in mosquitoes that allows them to host the malarial parasite. What biotechnology tool would be best suited for this task?
A) polymerase chain reaction (PCR)
B) cloning
C) CRISPR
D) creating a gene library
E) chopping DNA with restriction enzymes
C) CRISPR
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Which type of fossil is considered a trace fossil?
a. footprint b. shell c. seeds d. teeth e. spores
__________ are organisms that contain two or more kinds of genetically dissimilar cells from different
zygotes. a. Heterozygotes b. Chimeras c. Recombinants d. Transgenics e. Polyploids
The ____ are very common arthropod Paleozoic fossils, and are extinct today
a. phoronids b. trilobites c. tardigrades d. moss animals e. lophophorate animals What will be an ideal response?
What two abiotic factors are considered to most affect organisms?
a. fire and water b. the atmosphere and fire c. temperature and fire d. temperature and water e. climate and fire