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katrin2010 [14]
3 years ago
13

In mitosis of a single cell, the nucleus

Biology
1 answer:
exis [7]3 years ago
7 0
In mitosis of a single cell, the nucleus B) splits into two.
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Which of the following statements describes the most likely selective pressure behind the evolution of feathers?
Tems11 [23]

Answer:

c. Feathers were used as part of a social display

Explanation:

There are many speculations about the origin of feathers, some researchers believe that they emerged as a specific function, others defend the idea of the emergence of feathers from a social display.

The social display may have been one of the factors for the origin of the feathers, since in addition to the conquest of the female, animals thus selected would gain more conducive conditions for survival, such as better regulation of body temperature. But social display alone could not have forced the emergence of more complex feathers, since in many cases sexual characters usually occur only in males and not in females, or less apparent in females.

The appearance of penaceous appendages in theropods may be linked to the evolution of a high metabolic rate, which provides an improvement in locomotor skills as well as distinct behavior and visual communication. The development of penaceous appendages may also have played an important role in regards competition and radiation success of maniraptor theropods and their descendants of active flight in the Jurassic. Therefore, the theory is believed that external factors (natural selection) along with social display could have propitiated the origin of feathers.

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Why do isolines end near the shorelines of the oceans
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1. True or False Flatworms are known as acoelomates.
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True True False False False Truth False Truth that's all I know sorry

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What kind of change occurs when ice becomes liquid water?
Alex73 [517]

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physical change

Explanation:

it changes the form of the substance

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X-rays are used during all of the following tests except
notka56 [123]

Answer:

The answer is B

Explanation:

because magnetic resonance imaging is a form of medical imaging that measures the response of the atomic nuclei of body tissues to high-frequency radio waves when placed in a strong magnetic field, and that produces images of the internal organs.

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