Answer:
was caused by global warming that left ocean animals unable to breathe. The largest extinction in Earth's history marked the end of the Permian period, some 252 million years ago
Explanation:
The question is incomplete. Complete question is as follows :
What is/are the phenotype(s) of the recombinant offspring of the F2 generation?
Parental generation: True-breeding flies with red eyes and long wings were crossed to flies with white eyes and miniature wings. All F1 offspring had red eyes and long wings.
The F1 female flies were then crossed to males with white eyes and miniature wings. The following results were obtained for the F2 generation:
129 red eyes, long wings
133 white eyes, miniature wings
71 red eyes, miniature wings
67 white eyes, long wings
Answer:
Red eyes, miniature wings and white eyes, long wings
Explanation:
In absence of linkage parental and recombinant offspring are produced in equal number. When there is linkage crossover does not take place in expected frequency so recombinants are produced in lesser number than parental type offspring.
Here in F2 generation red eyes, miniature wings and white eyes, long wings are produced in lesser number (71 and 67). Also the original parents had red eyes, long wings and white eyes, miniature wings. Hence, Red eyes, miniature wings and white eyes, long wings are the phenotype of the recombinant offspring of the F2 generation.
In ecology, a disturbance is a temporary change in environmental conditions that causes a pronounced change in an ecosystem.
Disturbances often act quickly and with great effect, to alter the physical structure or arrangement of biotic and abiotic elements.
Disturbance can also occur over a long period of time and can impact the biodiversity within an ecosystem.
Major ecological disturbances may include fires, flooding, storms, insect outbreaks and trampling.
Earthquakes, various types of volcanic eruptions, tsunami, firestorms, impact events, climate change, and the devastating effects of human impact on the environment (anthropogenic disturbances) such as clearcutting, forest clearing and the introduction of invasive species can be considered major disturbances.
Not only invasive species can have a profound effect on an ecosystem, but also naturally occurring species can cause disturbance by their behavior.
Disturbance forces can have profound immediate effects on ecosystems and can, accordingly, greatly alter the natural community. Because of these and the impacts on populations, disturbance determines the future shifts in dominance, various species successively becoming dominant as their life history characteristics, and associated life-forms, are exhibited over time.
The correct answer is enter inhibitors or fusion inhibitors.
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Enter inhibitors are a class of <span>antiretroviral drugs, used for the treatment of </span>HIV infection. Enter inhibitors interfere with the binding, fusion and entry of a virus to a human cell by <span>binding to human cellular co-receptors.</span></span>
