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12345 [234]
3 years ago
6

¿Qué habría ocurrido con la mariposa del abedul durante la revolución industrial si no hubieran existido mariposas oscuras?​

Biology
1 answer:
Ipatiy [6.2K]3 years ago
4 0
Vwveve que vbevrvbvrvevvevdvev
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Which is the most accurate statement about the heating curve and energy
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Kinetic Energy, Potential Energy and a Heating Curve. Since Temperature is a measure of "Average Kinetic Energy", any change in temperature is a change in Kinetic Energy. Since temperature does not change during a phase change, the energy that is gained or lost is Potential Energy.

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Penguins and orcas are both black and white, have developed fins for rapid swimming and are able to tolerate cold water, but pen
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Answer:

Analogous structures

Explanation:

Analogous structures are similar structures that evolved independently in two living organisms to serve the same purpose.

Analogous structures are examples of convergent evolution, where two organisms separately have to solve the same evolutionary problem – such as staying hidden, flying, swimming, or conserving water – in similar ways. The result is similar body structures that developed independently.

In the case of analogous structures, the structures are not the same, and were not inherited from the same ancestor. But they look similar and serve a similar purpose.

For example, the wings of an insect, bird, and bat would all be analogous structures: they all evolved to allow flight, but they did not evolve at the same time, since insects, birds, and mammals all evolved the ability to fly at different times.

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Which of these choices is a benefit of using only nonpolluting sources of electricity?
sergij07 [2.7K]
B. Healthier ecosystems. If you're talking about benefits, this is the only positive on this list. The others are listing the difficulties or downsides.
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3 years ago
Is the binding of a transcription factor to its dna recognition sequence necessary and sufficient for an initiation of transcrip
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Transcription factors are necessary for an initiation of transcription at a regulated gene but not sufficient.

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter Transcription factors can enhance the interaction between RNA polymerase and a DNA sequence- promoter, encouraging the expression of the gene. Such transcription factors are called activators. Otherwise, when the gene expression is inhibited, factors are called repressors and they bind to sequence –operator.

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

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4. Which of the following is NOT part of the axial skeleton?
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Answer: b pelvic

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