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Hitman42 [59]
3 years ago
8

Some scientists have proposed that the earliest forms of life may have existed in an "RNA World" where RNA was both the genetic

material and responsible for enzymatic activity. Imagine that you have recreated such a life form. What would demonstrate that RNA, but not protein or DNA, is necessary and sufficient for these functions?
Biology
1 answer:
Kipish [7]3 years ago
5 0

Answer:

The organism lives and replicates despite RNase and DNase treatment, but the organism dies when treated with protease

Explanation:

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Why are single-stranded binding proteins necessary for DNA replication?
Margarita [4]

Answer:

d.They prevent the two parental strands from coming together again.

Explanation:

During the process of DNA replication, the two DNA strands should be separated from each other to serve as a template. To separate the two DNA strands, the helicase enzyme breaks down the hydrogen bonds between the complementary base pairs of the DNA strands. The process uses ATP as a source of energy.

Due to the presence of complementary base pairs, the separated DNA strands have a tendency to reanneal by the formation of hydrogen bonds. To prevent the reannealing of separated DNA strands, single stranded binding proteins bind to them. Binding to single stranded binding proteins to the separated DNA strands does not allow them to reanneal.  

8 0
3 years ago
The genes for miniature wings (m) and garnet eyes (g) are approximately 8 map units apart on chromosome 1 in Drosophila. Phenoty
Luden [163]
<h2>Answer is option " 2 & 4"</h2>

Explanation:

  • Two types of posterity can be created subsequent to mating: parental and recombinant. Recombinants are created because of the traverse of non-sister chromatids at the hour of gamete arrangement. Here, mating happens between m+g/mg+ female and mg/mg male so the posterity would be separated as follows:  
  • m+g/mg : Parental  
  • mg+/mg : Parental  
  • m+g+/mg : Recombinant  
  • mg/mg : Recombinant  
  • m+g+/mg (wild sort) and mg/mg (smaller than usual wings, garnet eyes) are the recombinants thus they were created because of the hybrid occasion.
  • Hence,the right answer is option 2 & 4 "wild type and miniature wings,garnet eyes"

7 0
3 years ago
What is the term for a light ray that is bent when it enters a new medium?
koban [17]
I'm pretty sure it is refraction <span />
8 0
4 years ago
Which feature is used to classify a rock based on its composition?
sergejj [24]

Answer:

The origin of the rock. The texture of the rock. The type of mineral in the rock.

7 0
3 years ago
What part of a cell keeps it in intact?
jekas [21]

Answer:

cell membrane

Explanation:

The cell membrane allows the cell to stay structurally intact in its water-based environment.

3 0
3 years ago
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