Speciation: <span>the formation of new and distinct species in the course of evolution
Speciation has occurred when the two species can no longer procreate with each other.</span>
Answer:
e. Some individuals acquired triazine resistance during their lifetimes, and were able to pass it on to offspring
Explanation:
The term resistance in the exposed example refers to an inheritable change in the weed population sensitivity, which is reflected in the consecutive failure of the chemical effects on the herb population.
Herbicide might produce a genetic modification in the weed, leading individuals to survive under the effects of the chemical. The plants evolve with the capability of tolerating the chemical dose that is usually used to destroy a normal population of plagues.
Resistance to the toxic is associated with mutations in some of the genes.
A mutation is a change in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
- The selective pressure or modeling environmental factor is the triazine herbicide
- The weed´s response to herbicide is the survival of only those that carry mutations.
- Natural selection benefits these mutations.
- The mutated herbs survive, become more resistant, and pass the mutation to their offspring.
Answer:
Scientists have determined that Earth and the moon most likely could not have formed together when the solar system was created. If they had, the moon would have a large iron core like Earth's, but it instead has a small iron core.
Explanation:
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C the answer is C that’s the answer C
Answer:
B. Is more closely related to frogs than to humans.
Explanation:
The amount of changes observed in a given gene from two different species is directly proportional to the divergence time. This means that if two species diverged recently, there will be few differences because there hasn't passed enough time for them to accumulate mutations. If two species diverged a long time ago, you will be able to observe many differences between the two homologous genes. The shorter the divergence time between two species, the closer they are related. Knowing this, you can conclude that the new organism will be more closely related to the species that it is more similar to, and in this case, that species is the frog, that only shows 5 differences in the hemoglobin when it's compared to the new species.