"The notion of ecological niche is central to ecological biogeography, which focuses on spatial patterns of ecological communities."Species distributions and their dynamics over time result from properties of the species, environmental variation..., and interactions between the two — in particular the abilities of some species, especially our own, to modify their environments and alter the range dynamics of many other species." Alteration of an ecological niche by its inhabitants is the topic of niche construction. The majority of species exist in a standard ecological niche, sharing behaviors and adaptations similar to the other closely related species within the same broad taxonomic class, but there are exceptions. A premier example of a non-standard niche filling species is the flightless, ground-dwelling kiwi bird of New Zealand, which feeds on worms and other ground creatures, and lives its life in a mammal-like niche. Island biogeography can help explain island species and associated unfilled niches."
Answer:
Only an experiment can prove whether the proposed hypothesis is true or not true.
Hypothesis can be described as a tentative statement which can either be supported by the results from the experiments or can be rejected by the results of the experiments. When repeated experiments give the same results again and again, the hypothesis might take the shape of a law.
Answer:
Option D) Met - His - Stop
Explanation
The table provided describes the genetic code, and from it you will observe that:
- AUG, a triplet code specify the amino acid named Methionine (Met);
- CAU, specify for Histidine (His);
- UGA, specify for "stop" which is a special function that causes termination of the amino acid sequence been synthesized.
Thus, the tRNA will yield Met - His - Stop
Answer:
Después de la fecundación, la célula recién formada llamada cigoto lleva a cabo divisiones sucesivas hasta desarrollar un nuevo individuo. Estas divisiones se llevan a cabo mediante el proceso llamado<u> segmentación.</u>
Explanation:
Luego de que se produce la fecundación del óvulo y se forma el cigoto, los 3 a 4 días que le siguen abarca un proceso llamado <u>segmentación</u>. En este proceso se producen <u>sucesivas divisiones celulares</u> dando blastómeros, los cuales son células que forman el embrión y a las estructuras que este necesita para desarrollarse. La segmentación es un proceso que ocurre en las trompas de falopio mientras el cigoto se desplaza hacia el útero donde se implantará.