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
bonufazy [111]
3 years ago
7

A gene encoding one of the proteins involved in the DNA replication has been inactivated by a mutatiion in a cell. In the absenc

e of this protein the cell attempts to replicate its DNA for the very last time. What DNA products would be generated in each case if the following protein were missing / mutated? (a) primase(b) DNA ligase(c) DNA polymerase I
Biology
1 answer:
Hitman42 [59]3 years ago
7 0

Answer:

primase - unwinded parental double helix DNA, no replication.

DNA ligase - new double helix DNA, one old strand and okazaki fragments

DNA polymerase 1 - original DNA strands, daughter strands with primers still attached.

Explanation:

The primase enzyme is responsible for the synthesis of RNA primer which binds with unwinded DNA strands at the origin of replications and serves as a starting chain for the daughter strands. Hence, their absence during replication will lead to the discontinuation of the replication process after the unwinding of the double helix structure by the helicase enzyme.

DNA ligase functions as to join fragments of DNA synthesized discontinuously (okazaki fragments) during replication. Okazaki fragments are generated after replication of the leading and the lagging strands have been complete. Hence, the absence of the DNA ligase will result in the lagging strands existing as a lone strand along with the okazaki fragments and a newly replicated DNA consisting of one old leading strand and its newly synthesized complimentary strand.

The DNA polymerase 1 is responsible for the removal of RNA primers and replacing them with DNA nucleotides after the elongation process. Hence, the absence of the enzyme will cause incomplete replication process.

You might be interested in
Water makes up a large percentage of the body’s cells. For a cell to remain in homeostasis, it should
mario62 [17]

Answer: Osmosis

Explanation:

"Water makes up a large percentage of the body's cells. For a cell to remain in homeostasis, there must be a mechanism to control water changes in the cells. The movement of water from an area of high water concentration to an area of low water concentration is osmosis." Source, Quizlet. https://quizlet.com/350562884/cell-homeostasis-flash-cards/

7 0
3 years ago
How do these two systems (circulatory and respiratory system ) maintain homeostasis
lutik1710 [3]

Answer:

I think its that the circulatory system keeps blood flowing and supplies blood to the organs and keeps the heart pumping and the respiratory system keeps you breathing an supplies oxygen to the organs

Explanation:

7 0
3 years ago
Animals with a three-chambered heart would include:_______
Setler79 [48]

Animals with a three-chambered heart would include Amphibians.

  • Amphibians have three-chambered which comprises of two Atria and one ventricle. Examples of Amphibians include Frog, Toads, Salamanders.
  • In Amphibians heart blood from the single ventricle travels to the lungs, skin, and body, where it is oxygenated. Before being pumped out of the heart, deoxygenated and oxygenated blood are mixed in the ventricle.
  • This is because the Amphibians have low rate of metabolism and thus requires less oxygen for their metabolism.
  • As a result heart's load to deliver oxygenated blood to body is lowered.

Thus, from the above pointers we can conclude that only Amphibians from the option have three-chambered heart.

Learn more about Amphibians:

brainly.com/question/27961653

#SPJ4

4 0
1 year ago
Put the following mitosis and cytokinesis images in order<br> 1st<br> 2nd<br> 3rd<br> 4th<br> 5th
son4ous [18]

Answer:

Explanation:

hope this helps

8 0
2 years ago
scientists can use genetic information to identify people because it is unique to each person. which characteristic is unique to
SpyIntel [72]

Answer:

The DNA of any individual possesses genetic traits which vary from individual to individual. Traits can be physical traits or behavioral traits.

Explanation:

Example of a physical trait would be the appearance of an individual and behavioral trait refers to the nature of the individual. Both vary from individual to individual.

6 0
3 years ago
Other questions:
  • Horsing around in the lab is always ok when no experimenting is being done never allowed fine when you are alone ok because it i
    9·2 answers
  • Which of the following is not an example of a motor skill?
    10·1 answer
  • A mouse with curled whiskers migrates from one forest community to another. She mates with other mice in the new community and p
    12·2 answers
  • Which organelle converts food into compounds that the cel uses for growth?
    7·1 answer
  • Plzzz helpp ASAP <br> WILL MARK BRAINLIEST
    9·2 answers
  • The image is a model showing the processes of the water cycle. Water uptake to the atmosphere occurs through the processes of ev
    5·1 answer
  • When planning a classical conditioning experiment, what is the goal of the researcher?
    11·2 answers
  • THREE USES THAT CELLS MAKE OF THE ENERGY RELEASED BY ATP
    7·1 answer
  • What are the four possible gametes of an organism has the genotype KkMm?
    5·1 answer
  • What’s the answer can someone pleaseeeee helpppp!!!!!!!!!!I’ll mark the brainliest
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!