1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Juli2301 [7.4K]
3 years ago
12

The enzyme DNA polymerase works only in the 5′ to 3′ direction. How does this affect the leading strand and the lagging strand?

Biology
1 answer:
aliina [53]3 years ago
6 0

Answer:

B

Explanation:

DNA replication is semiconservative- meaning the old template strand will form a double helix with the newly synthesized strand. The DNA polymerase can only replicate DNA in the 5’ -> 3’ direction on a DNA strand. However, because the two strands of a DNA double helix run antiparallel (and they are replicated together), then during replication, one strand will be oriented in the opposite direction (i.e 3’ -> 5’ direction).

Because DNA polymerase requires a primer to begin replication, the leading strand will require one primer, because replication on this strand occurs continuously. On the lagging strand, many primers are required because replication is done piecemeal forming fragments called Okazaki fragments. The fragments are later joined by DNA ligases.

You might be interested in
What do we call the act of taking something away to increase a behavior?
pashok25 [27]
Negative reinforcement.
8 0
3 years ago
What information about recombination frequencies enables scientists to create linkage maps?
True [87]

The answer is;

  1. The recombination frequency is proportional to the distance between the two genes
  2. The lower the recombination frequency, the farther apart two genes are on the chromosome

Genes that are close together are more likely to be passed together to offspring during recombination. Geneticist compares the ration between the proposed phenotype offspring and actual phenotype offerings in a population. The higher the recombination frequency (centimorgans," or cM), the closer the genes are linked together, physically.

5 0
3 years ago
Free nucleotides must be available in a cells nucleus to produce mrna strands. where do these free nucleotides come from
iren [92.7K]
<span>All four nucleotides (adenine, guanine, thymine, cytosine) are synthesized in the liver. The nucleotides can be synthesized de novo or recycled through salvage pathways. The synthesis occurs in the cytoplasm of the cell, not within a specific organelle. The components which are used for the nucleotide synthesis are derived from biosynthetic precursors of carbohydrate and amino acid metabolism, and from ammonia and CO2.</span>
8 0
3 years ago
Name two types of evidence scientists use to support the theory of evolution. *Hint* The human hand is very similar to a Dolphin
Alex73 [517]

Answer:

Hello! There are numerous things that support Darwin's theory of evolution, but the most credible ones include:

*Homologous structures - structures that are similar in structure but different in function (e.g. wing of a bat and arm of a human).

*Embryology - the study of embryos

*Continental drift - some fossils of organisms that were adapted to a different environment are often found in different climates/areas they don't seem to have been adapted to.

*DNA - similarities in the genomes of certain animals are often used to compare amino acid sequences and protein production.

I hope I helped!

There are a bunch more, but I decided to leave a select few for you to write about.

Feel free to leave a comment down below if you need more assistance. :)

4 0
3 years ago
How would you explain that your brain is “plastic”? How does this help us learn?
ICE Princess25 [194]

Answer:

Plasticity is the capacity of the brain to change with learning. Changes associated with learning occur mostly at the level of connections between neurons: New connections form and the internal structure of the existing synapses change. ... Plastic changes also occur in musicians brains compared to non-musicians.

Explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • How are derived characters and mutations related?
    6·1 answer
  • This is a liquid fuel derived from plant materials​
    7·2 answers
  • Lyme disease is a bacterial infection that is passed from ticks to humans. What kind of relationship exists between the bacteria
    15·2 answers
  • Which of the following terms would Bb represent in an organism?
    5·2 answers
  • Help pleaseee !<br><br> Why is sea ice studied?
    11·1 answer
  • Many states and local authorities are requring cars to have their emission
    15·1 answer
  • According to the diagram above, the 3 nucleotides (or bases) labeled "F" on the
    11·1 answer
  • Which part of the body has diploid cells?​
    14·1 answer
  • Name the scientists involved in the development of the microscope
    5·1 answer
  • Dna can undergo many types of modifications. one of these is methylation. which bases are methylated more often in human dna?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!