All categories

3 years ago

How is DNA fragment length measured?

2 answers:

4 0

gel electrophoresis. This method relies on the fact that DNA fragments are charged, and it is an alternative to more expensive methods, such as X-ray crystallography, which was responsible for the discovery of the double-helix structure of DNA.

to determine the sizes of these unknown fragments, scientists usually plot a graph. On the x-axis is the distance traveled by each band in the ladder in millimeters, while on the y-axis is the size of each band. When the points are connected by a curve, the size of any band can be extrapolated from the curve after measuring the distance traveled by that band in millimeters.

Hope this helps :)

jonny [76]3 years ago

3 0

Answer: Its measured with the use of gel electrophoresis.

Explanation: Scientists use a method known as gel electrophoresis to measure the lengths of DNA fragments. Electrophoresis works because fragments carry a small charge.

You might be interested in

Place the following steps of endomembrane system function in the correct order.

maks197457 [2]

Answer:

Explanation:

The correct option here would be D.

The endomembrane system refers to a group of membrane-based organelles whose primary function is to synergistically work together to modify, package, and transport lipids and proteins. The system includes organelles such as the lysosome, the nuclear envelope, the endoplasmic reticulum, and the Golgi apparatus.

For an endomembrane system function involving a protein, the protein would first of all need to be synthesized by the ribosome - the free ones or the ones attached to the rough endoplasmic reticulum. Thereafter, the synthesized protein would then be folded or packaged into transportable vesicles. The vesicles are then received by the Golgi apparatus which further modifies the proteins before transporting them accordingly.

Hence, the correct order of a typical endomembrane system function would be:

Ribosomes on the RER synthesize proteins.
Proteins are packaged into transport vesicles.
Golgi apparatus receives transport vesicles from the RER.
Proteins are modified by the Golgi apparatus.
Modified proteins may be secreted from the cell by exocytosis.

6 0

2 years ago

What is the most appropriate way to present the data below?

patriot [66]

Answer:

bar graph

Explanation:

6 0

3 years ago

Read 2 more answers

If one side of a DNA molecule is: AGATTCGAACCT, what would the complementary strand be?

Veseljchak [2.6K]

Answer:

TCTAAGCTTGGA

Explanation: adenine (A), thymine (T), cytosine (C) and guanine (G). Each base can only bond with one other, A with T and C with G.

3 0

2 years ago

Which cell organelle stores and sends nutrients throughout the cell?

Wittaler [7]

Ribosome packages nutrients and sends itto different parts of the cell

3 0

3 years ago

Which evidence supports the big bang theory?

kogti [31]

Answer:

Umm im a Christian and dont believe in the big bang but i do like to help people but the best one is the Radiation is detected in every direction due to the discovery in the 1960s of cosmic microwave background radiation.

Explanation:

4 0

2 years ago

Read 2 more answers