The first genetic material on earth was probably ________.

Biology

1 answer:

vfiekz [6]3 years ago

3 0

The first genetic material on earth was probably ________.

A) DNA produced by reverse transcriptase from abiotically produced RNA

B) DNA molecules whose information was transcribed to RNA and later translated in polypeptides

C) self-replicating RNA molecules

D) oligopeptides located within protobionts

Answer:

C) self-replicating RNA molecules

Explanation:

RNA molecules are considered to be the first genetic material that evolved on the earth. Assembly of nucleotides gave rise to single stranded RNA molecules that could catalyze various processes. These RNA molecules were able to replicate themselves. In this way, the self-replicating RNA molecules served as the first genetic material. Later, the accumulation of several mutations such as the evolution of thymine base from uracil and deoxyribose sugar from the ribose sugar gave rise to DNA.

You might be interested in

SOMEONE PLEASE ANSWER THIS FOR BRAINLIEST!!!!!

Lilit [14]

I’m confuse between A and B but I think it is mostly B

3 0

3 years ago

Read 2 more answers

Which of the following does not represent a common outcome following introduction of foreign DNA into a bacterial cell?Choose on

AleksandrR [38]

Answer:

The correct option is A, since if the DNA enters in a circular form it is called a plasmid, and the plasmids upon entering the bacteria self-replicate outside the genetic structure, which gives the bacteria better survival qualities.

Explanation:

Plasmids are generally circular extrachromosomal DNA molecules that replicate and transmit independently of chromosomal DNA, and are normally present in bacteria, archaea, and sometimes in eukaryotic organisms such as yeast. Its size varies from 3 to 10 kb. The number of plasmids can vary, depending on their type, from a single copy to a few hundred per cell. Plasmid vectors allow cloning of exogenous DNA ligands of up to 4 kb since a larger size than this makes cloning in these vectors difficult. The term plasmid was first introduced by the American molecular biologist Joshua Lederberg in 1952. Plasmids can only coexist as one or more copies in each bacterium, due to cell division they can be lost in one of the secreted bacteria.

5 0

3 years ago

WILL GIVE BRAINLIEST! One characteristic of fungi is that they have a cell wall made of chitin. What are two other characteristi

noname [10]

Answer:

Explanation:

Fungi produces spores and heterotrophic. For example, mushrooms produce spores.

8 0

3 years ago

Many of the cells of the root meristem are not undergoing mitosis, rather they are in a stag called ____________. Based upon the

shtirl [24]

Interphase and longer