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Cerrena [4.2K]
2 years ago
15

In which phase do sister chromatids line up in the middle of the cell, (in 'single-file', without a homologous partner)? Group o

f answer choices PROPHASE I INTERPHASE TELOPHASE II ANAPHASE II METAPHASE I ANAPHASE I TELOPHASE I METAPHASE II PROPHASE II
Biology
1 answer:
ipn [44]2 years ago
3 0

Answer:

The correct answer is ''METAPHASE I.''      

Explanation:

Metaphase I is the stage in which chromosomal studies are generally performed, because its morphology is very clear. The chromosomes, moved by the mitotic spindle, are placed in the center, between the two asters and form the so-called metaphase plate, in which the chromosomes are positioned in such a way that the kinetochore of each sister chromatid are oriented towards the opposite poles. Keeping chromosomes on the cell equator implies a balance between the forces of the microtubules that tend to move the kinetochores toward opposite poles, so positioning them in the center involves a great deal of energy.In each kinetochore, between 20-30 microtubules can be anchored, which exert traction force towards the pole from which they come, so the metaphase plate is maintained by the balance between the opposite forces of the poles on the chromosomes, which hold their sister chromatids by centromeric cohesin.

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What does carrying capacity mean?
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Explanation:

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3 years ago
How can histograms help you describe a population? Use the word bank above to help you explain your answer.
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Explanation:

A histogram is a graphical representation of a variable using bars. In such a bar, <u>its area is proportional to the frequency of the values represented</u>. Thus, it shows the distribution of the population, or of the sample, with respect to a characteristic, quantitative and continuous, such as the weight or height of a population. It is used to determine the degree of homogeneity of the values studied, or to see the degree of variability, and therefore, the dispersion of all the values taken by the parts.

In order to construct a histogram first we need to have a frequency table with all the information. On the abscissa axis (horizontal axis) the intervals are placed from smallest to largest.  On the ordinate axis (vertical axis), the absolute frequencies of each of the intervals are represented.  Then, the rectangular bars of equal width are drawn, and the height represents the absolute frequency. All bars touch the bars next to each other, unless an interval has zero frequency (the height of the bar will also be zero).

<u>Thus, histograms are used to describe populations since they represent a variable and in what proportion of the population it is found.</u>

7 0
2 years ago
if there are 1000 units of energy avalaible at the producer level of energy pyramid, approximately how many units of energy are
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6 0
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The answer would be d
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Tanzania [10]

Answer:

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2 years ago
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