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givi [52]
2 years ago
11

What are the instructions on a chromosome called

Biology
1 answer:
never [62]2 years ago
7 0

The instructions on a chromosome are called-DNA

-Steel jelly

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Water is warmed by the sun and evaporates because
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cuz fam when liquids reach above boilin point they melt

Explanation:

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2 years ago
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In your laboratory journal, describe the two tools of molecular biology that are often described as the scissors and glue for ma
MatroZZZ [7]

The "scissors" of the molecular biology are: DNA Restriction enzymes.

A restriction enzyme is a protein capable of cleaving a DNA fragment at a characteristic nucleotide sequence called a restriction site. Each restriction enzyme thus recognizes a specific site. Several hundred restriction enzymes are currently known.

Naturally present in a large number of species of bacteria, these enzymes have become important tools in genetic engineering.


The "glue" of the molecular biology are: DNA ligase

In molecular biology, DNA ligases are ligase-class enzymes that catalyze the formation of a phosphodiester bond between two segments of DNA. DNA ligases are involved in several essential cellular processes of DNA metabolism: in DNA replication, suture of Okazaki fragments, and in DNA repair and homologous recombination.


The use of these tools in molecular biology: Cloning

Molecular cloning is one of the bases of genetic engineering. It consists of inserting a DNA fragment (called insert) in an appropriate vector such as a plasmid for example. The new plasmid thus created will then be introduced into a host cell, generally the Escherichia coli bacterium. This will then be selected and multiplied to obtain a large amount of the plasmid of interest. Cloning a gene involves inserting it into a plasmid. A clone will be the bacterial transformant that contains this particular plasmid. In this case we speak of clone because all the individuals of the bacterial colony are genetically identical. Molecular cloning is thus different from reproductive cloning (creating an individual genetically identical to another but of a different age) or therapeutic cloning (making tissues from stem cells to perform transplants compatible with the recipient).

Molecular cloning requires restriction enzymes capable of cleaving the DNA, and DNA ligase capable of re-gluing the DNA fragments. Ligase was isolated for the first time from T4 bacteriophage. This enzyme is involved in the repair and replication of DNA. It can bind DNA fragments with compatible sticky ends. At higher concentration, this enzyme is also able to bind two ends of DNA as shown here. T4 DNA ligase works using ATP and Mg ++. It has an activity optimum of 16 ° C, but remains active at room temperature.

7 0
3 years ago
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Which of the following reactions is incorrectly paired with its location?
galben [10]

E)Krebs cycle/ cristae of mitochondria

Krebs cycle occurs inside the matrix of the mitochondria. Electron transport chain takes place in the cristae.

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3 years ago
An ecological effort by a nonprofit organization has targeted abandoned farms as a way to help local farmers earn more money. On
kotegsom [21]

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lll only is wrong even though this is not the correct answer hope it helps

Explanation:

8 0
2 years ago
Which is a point mutation and not a frameshift mutation?
Usimov [2.4K]

The question lacks the multiple options. All the information related to frame shift mutation and point mutation will be included in the answer.

Answer:

Mutation is the sudden heritable change in the genetic sequence of the organisms. Two main types of mutation are frame shift mutation and point mutation.

The point mutation occurs due to the change in the single nucleotide sequence or base. Frame shift mutation refers to the deletion or insertion of the basepair in the sequence. The frame shift mutation changes the reading frame of the sequence.

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