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weqwewe [10]
4 years ago
13

Which best describes how DNA is used as a molecular clock? (2 points)

Biology
2 answers:
DanielleElmas [232]4 years ago
8 0

Answer:

The correct answer would be the first option.

Molecular clocks compare the nucleotide sequence of DNA or RNA between two species estimate the time they diverged from each other.

The number of mutation present in the nucleotide sequences of two specied provide this estimation.

The more the number of mutation the earlier they diverged from each other.

PilotLPTM [1.2K]4 years ago
3 0
I think the correct answer from the choices listed above is the third option. The DNA is used as a molecular clock in the sense that the <span>percent of carbon in DNA is compared between parent and offspring. Hope this answers the question. Have a nice day.</span>
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8 0
3 years ago
Define biotic factors and give an example.<br> Answer
CaHeK987 [17]

Answer:

definition: Biotic factors are the living components of an ecosystem.

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4 0
3 years ago
Although we have discussed single-slit diffraction only for a slit, a similar result holds when light bends around a straight, t
QveST [7]
<h2>Width of hair is "1.96 10⁻⁵ m"</h2>

Explanation:

  • For this diffraction problem they tell us that it is equivalent to the diffraction of a single slit, which is explained by the equation
  •      a sin θ =±  m λ
  • Where the different temrs are: “a” the width of the hair, λ the wavelength, θ the angle from the center, m the order of diffraction, which is the number of bright rings (constructive diffraction)  
  • We can see that the diffraction angle is missing, but we can find it by trigonometry, where L is the distance of the strand of hair to the observation screen and "y" is the perpendicular distance to the first minimum of intensity
  •      L = 1.25 m 100 cm/1m   = 125 cm
  •      y = 5.06 cm  
  •     Tan θ = y/L
  •     Tan θ = 5.06/12
  •      θ = tan⁻¹ ( 0.0405)
  •      θ =  2.32º
  • With this data we can continue analyzing the problem, they indicate that they measure the distance to the first dark strip, thus m = 1
  •     a = m λ / sin θ
  •     a = 1 633 10⁻⁹ 1.25/sin 2.3
  •     a = 1.96 10⁻⁵ m  
  •     a = 0.0196 mm
  • Hence, "the width of the strand of hair is   1.96 10⁻⁵ m" is correct answer

3 0
4 years ago
This tissue contains chondrocytes along with thick bundles of collagen fibers. a location for this tissue is
sdas [7]
<span>Cartilage. Cartilage primarily tissue consists of chondrocytes, specialized cells that form a matrix of collagen and other proteins. Cartilage tissue is found at joints between long bones, and also comprises other structural areas in the body such as vertebrae, bronchial tubes, the outer ear, the nose, and in between ribs.</span>
5 0
4 years ago
What is sliding filament theory??​
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Answer:

The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement. ... The sliding filament theory is a widely accepted explanation of the mechanism that underlies muscle contraction.

Explanation:

;) here

5 0
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