Question

2.07) the main mechanism of de - extinction is ___.
a. selective breeding c. cloning
b. dna splicing d. fossilized insects
2.08) the reason bed bug infestations are so hard to get rid of is ___.
a. they have high genetic diversity
b. they have low genetic diversity
c. inbreeding does not affect their ability to produce healthy offspring
d. they reproduce rapidly
2.09) the guideline that states that if the evidence, even if not fully studied, shows that human health or the environment can be harmed, then all precautionary measures should be taken to avoid or reduce the potential harm is known as the ___.
a. precautionary principle
b. conservation principle
c. cautionary principle
d. biodiversity principle

Explanation:

• 2.07: De - extinction aims to bring back extinct species. Cloning is a key mechanism where DNA from extinct species (e.g., from fossils) can potentially be used to create clones. Selective breeding is for existing species improvement, DNA splicing is more about gene manipulation within existing organisms, and fossilized insects are just a source of DNA (not a mechanism).
• 2.08: Bed bugs have low genetic diversity. This means that a single treatment (e.g., a pesticide) is less likely to be ineffective against a diverse gene pool. If they had high genetic diversity, some might be resistant, but with low diversity, inbreeding could lead to more uniform responses. Inbreeding does affect their ability (as it can lead to deleterious recessive traits), and rapid reproduction alone doesn't explain the difficulty (as many rapidly reproducing organisms can be controlled).
• 2.09: The precautionary principle states that if there is a threat of harm (even if not fully understood), preventive action should be taken. The conservation principle is more about protecting resources, the cautionary principle is not a standard term in this context, and the biodiversity principle is about protecting the variety of life (not specifically about taking measures when harm is suspected).

Answer:

2.07) C. cloning
2.08) B. they have low genetic diversity
2.09) A. precautionary principle