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
A substance that influences the reaction but does not participate in the reaction is a
jekas [21]

Answer:

Explanation:

Catalyst is a substance that influences the reaction but does not participate in the reaction

7 0
2 years ago
Read 2 more answers
The plant on the left is the parent plant. the plant on the right is the parent's offspring. the offspring is genetically identi
Aloiza [94]
The parent plant produced asexually because offspring from asexual reproduction are genetically identical to the parent.
7 0
3 years ago
What causes earthquakes?
Paladinen [302]
Seismic Waves in Earth cause earthquakes. Tectonic Plates can also cause earthquakes as they move against each other
8 0
3 years ago
From what kind of cross a mule is produced?​
insens350 [35]

Answer:

Mule is produced from a hybrid cross.

Explanation:

A mule is the offspring which is produced by crossing or mating of male donkey with female horse.

Where the male donkey is called Jack and female horse is called mare.

The offspring produced as a result is Mule.

The gender of Mules may be male or female but consists of 63 chromosomes.

But such produced Mules are sterile.

4 0
2 years ago
Who is Thomas Malthus and what were some of his theories?
Oliga [24]

Answer:

Thomas Robert Malthus (born 1766) was a British Reverand and Scholar,. He was nfluential in Political Economy and Demography. Between 1798 and 1826 Malthus published six editions of his famous treatise. THOMAS wrote a book called "AN ESSAY ON PRINCIPAL OF POPULATION." He became known for his theories on population and factors on population growth.

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following terms helps to describe an ecosystem? Select one of the options below as your answer:
    13·1 answer
  • Which of the following is not an effect of meiosis?
    15·1 answer
  • Which events take place in the light-dependent reactions of photosynthesis?
    7·1 answer
  • One positive effect of recycling aluminium cans to manufacture new beverage containers is
    8·2 answers
  • A chloroplast contains green pigment called
    8·1 answer
  • What do ligaments hold together in a joint?
    11·1 answer
  • Are seals and monkeys related?
    9·2 answers
  • Which 'omics technology requires reverse transcriptase?
    15·2 answers
  • Does anybody know what question 3 answer is? ❤️
    7·1 answer
  • Which part of the eye focuses light to the back of the eye?.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!