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vfiekz [6]
3 years ago
9

Which statement is true about DNA ? a.Both of the original DNA strands act as templates during replication. b.It is a single-str

anded molecule. c.Only one of the original DNA strands acts as a template during replication. d.Its replication takes place in the cytosol.
Biology
1 answer:
Ronch [10]3 years ago
4 0

Answer:

The correct answer is a. Both of the original DNA strands act as templates during replication.

Explanation:

During the DNA replication both the strands of the DNA act as the template strand. DNA polymerase is the enzyme that replicates both the DNA strand.  

One of the strand of DNA gets continuously replicated which is called the leading strand. While the other strand is replicated in a discontinuous manner called lagging strand.

As due to discontinuous replication in the lagging strand short DNA fragments are formed called Okazaki fragments which are joined together by DNA ligase. So both the original DNA strands act as template during replication.

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Setler [38]
Meiosis is needed for sexual reproduction, here chromosome number is halved, it provides for mixing up of genes.
mitosis is needed for growth, repair, replacement, asexual reproduction.
it maintains same chromosome number
4 0
3 years ago
How does the temperature of the ocean or the land around a city affect the city’s climate?
Korolek [52]

Answer: Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate. ... Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.

Explanation: -oceanexpolorer

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3 0
3 years ago
DNA code is transferred to mRNA in the ____ through a process called ____.
aivan3 [116]
DNA code is transffered to mRNA in the nucleus through a process called transcription.

Nucleus, the control center of the cell is the organelle which intiates, enables, and manages the various simplex. compound and complex cellular activities. It also stores the DNA of the cell which is then replicated and recopied over a hundredth and thousandth times over through cell division processes. In the nucleoplasm -nucleolus, the inner part of nucleus of a cell is where the DNA to mRNA and to protein; vice-versa happens.  

5 0
3 years ago
What is the best evidence for a three-domain system?
ch4aika [34]

Answer:

The best evidence for the three domain system is

Sensitivity to Antibiotics

Explanation:

The three domains of life includes :

Archaea - oldest known domain, ancient forms of bacteria.

Bacteria - all other bacteria that are not included in the Archaea domain.

Eukarya - all the organisms that are eukaryotic or contain membrane-bound organelles and nuclei.

Types of evidences for the three domain system are:

1) differences in the sequences of nucleotides in the cell's robosomal RNAs (rRNA)

2) the cells's membrane lipid structure.

3) its sensitivity to antibiotics.

8 0
3 years ago
In which of these ways might an ectotherm respond to changes in environmental temperature?
Sonja [21]

Answer: move elsewhere  b

Explanation:

4 0
3 years ago
Read 2 more answers
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