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muminat
3 years ago
8

An individual "step" by a myosin head in one cycle pulls the thin filament about 15 nmnm. How many steps must each actin fiber m

ake in one contraction
Biology
1 answer:
LUCKY_DIMON [66]3 years ago
8 0

Answer:

The correct answer is ten steps.

Explanation:

At each individual step, myosin head pulls the actin about 15 nm. For one full contraction to be completed, actin has to take around 10 steps, which is about 150 nm.

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2 years ago
What are the three elements of an editorial?
Vika [28.1K]

Answer:  the introduction, the body, and the conclusion

Explanation:

An editorial piece is meant to show the opinion of the newspaper on a certain issue. It is usually written by the senior editor or the publisher and is the first article on the written piece.

Editorials follow a common writing structure that begins with an introduction where the issue is introduced. Discussions are then made in the body and the conclusion will then round up the piece.

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3 years ago
Why do calculated recombination frequencies between pairs of loci that are located far apart underestimate the true genetic dist
den301095 [7]

Answer:

B. As the distance between loci increases, some multiple crossovers go undetected such that the relationship between recombination frequency and map distance ceases to be linear.  

Explanation:

When calculating recombination frequencies, and hence, map distances, we might notice that these distances are not completely additive. They might vary. <em>For example, let us say that we have three genes, A, B, and C, in that order. </em>We calculated that the <em>distance between A and B equals 5.9</em> MU and that <em>B and C are 19.5 MU apart.</em> According to this, we might say that the <em>total distance between A and C is 25.4 MU (5.9 + 19.5). </em>However, after a<em> two-point calculation between A and C, the value equals 23.7 MU. </em>

The recombination frequency between these two genes located in the extremes and far apart underestimate the actual genetic distances between them because there might occur other crossing-overs that were not detected. This is <em>when calculating the distance between A and C, we probably will not detect the occurrence of a double recombinant between them, and hence, we might sub-estimate the real distance.</em>

The relationship between the actual map distance (number of crossing overs) and the recombination frequency between two loci, is not lineal. The farther apart are the two genes, the worse is the distance estimation.  

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If you graduate student is studying the influence of biology on behavior and mental processes what field of psychology would the
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Hope this helps!
5 0
4 years ago
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