Which statement about Sanger sequencing is false?

Biology

1 answer:

Likurg_2 [28]3 years ago

8 0

Answer:

D) To read the DNA sequence of the synthesized strand in the 5'-to-3' direction, the gel is read from top to bottom.

Explanation:

The DNA sequence of the synthesized strand in the 5'-to-3' direction is read from the bottom to the top. On the electrophoresis gel, bands corresponding to the smallest DNA fragment migrate to the bottom of the gel. Meaning, the DNA primer fragment would be at the bottom and immediately above it would be the fragment that had fewer dNTPs (deoxynucleotidetriphosphates) incorporated prior elongation termination by an incorporated ddNTP.

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How is the nitrogen cycle important to DNA and synthesis of proteins?

kirza4 [7]

Answer:

Once nitrogen is converted into compounds like ammonium and nitrate, these can be taken up from soils by plants and then the nitrogen can be used to form macromolecules like proteins and nucleic acids (DNA and RNA). ... It is an important part of many cells and processes such as amino acids, proteins and even our DNA.

Explanation:

Hope it helps...:)

5 0

3 years ago

Which of the statements best describes the process of crossing over during meiosis? Haploid daughter cells trade chromosomes in

Maslowich

Homologous chromosomes pair up and exchange segments of DNA.

Option A

<h3>Explanation:</h3>

Crossing over is an event of Prophase 1 of meiosis 1. It occurs in the zygotene phase of prophase 1. Here the homologous chromosome pairs get very close together and gets packed within protein coat. The enzymes randomly cut the DNA segments from both chromosomes at same loci and exchange them with each other. This results in the exchange of genes between the two chromosomes. This is how the variation comes to place between offsprings of the same individuals. The crossing over results to form X shaped intersections between homologous pair of chromosomes which is called as chaismata. This phase occurs in pachytene phase and is visible in diplotene phase when the protein coat dissolves.