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
tino4ka555 [31]
3 years ago
6

If Meselson and Stahl had used CsCl gradient analysis and identified DNA molecules with two distinct densities after the first g

eneration, which model of DNA replication would have been supported by this data?
O conservative replication model
O semiconservative replication model
O dispersive DNA replication model
Biology
1 answer:
AnnyKZ [126]3 years ago
5 0

Answer:

conservative replication model

Explanation:

In their experiment, Meselson and Stahl found that the DNA duplexes present after the first round of replication had intermediate density. This occurred since the semiconservative process of DNA replication of one DNA molecule (having both strands with 15N) forms two DNA duplexes each with one parental strand (15N) and one newly formed strand (14N).

If they had found two duplexes of two different density, this would have supported the conservative replication model. In this case, the DNA replication of the parent DNA molecule would have formed two DNA duplexes. One DNA molecule would have both the parental DNA strands with 15N while the other DNA duplex would have both newly formed strands with 14N.

You might be interested in
Why would scientists analyze another specimen from the same species
Mashutka [201]

Among the most frequently used species identification methods are: The evolutionary relationships between the unknown sequence and a set of known standard sequences are estimated using phylogenetic trees.

<h3>What is a phylogenetic tree?</h3>

Among the most commonly used species identification methods are: The evolutionary relationships between the unknown sequence and a set of known reference sequences are estimated using phylogenetic trees.

A phylogenetic tree is a diagram that depicts the evolutionary relationships between organisms or groups of organisms.

Scientists consider phylogenetic trees to be evolutionary hypotheses because the proposed relationships cannot be confirmed in the past.

Thus, every individual of same species are related to each other, so  scientists can analyze another specimen from the same species.

For more details regarding phylogenetic tree, visit:

brainly.com/question/13577065

#SPJ1

6 0
9 months ago
NEED ANSWER ASAP
Paul [167]

Answer:

the answer would be A

Explanation:

Animal cells are oval and egg shaped so we can cancel out c and d

A is the correct answer because we can see green dots within the structure. Chloroplasts contain a green pigment called chlorophyll. This green pigment makes the chloroplast and the structure green (as we can see in the picture). Photosynthesis occurs in the chloroplasts, and it is where the plant gets its glucose from

Hope this helps!

8 0
2 years ago
Why do multicellular organisms perform mitosis and meiosis ?
Aleks04 [339]

Answer:

Multicellular organisms depend on mitosis for growth and repair. When an animal, plant or other multicellular organism grows, it makes more cells through mitosis. Organisms can repair some of their tissues, using mitosis to regenerate new cells.

Explanation:

4 0
2 years ago
How much energy is passed on from each level
Anuta_ua [19.1K]

Answer:

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat

8 0
3 years ago
19. One long-lasting effect of a pandemic influenza is that: A. Survivors may develop severe psychological problems B. Some vict
Ksenya-84 [330]

Answer:

A.

Explanation:

survivors may develop huge psychological problems due to the remaining options in the question

5 0
2 years ago
Other questions:
  • Like all sciences, forensics using the scientific method to reach conclusions. However, in forensics, this method is followed a
    15·1 answer
  • Which characteristics are common to all archaea and bacteria
    10·1 answer
  • Which component of acid rain kills plants and harms soil? 6.2?
    5·1 answer
  • 1. Which of the following forms all matter?
    8·2 answers
  • Which is a correct statement about gametogenesis? In gametogenesis, germinal cells multiply by mitosis and mature gametes are fo
    10·1 answer
  • Define procedure in your own words​
    6·1 answer
  • An object of the same mass has three different weights at diffrent times. Which statement is possible
    5·1 answer
  • a hunter illegally kills a wolf in yellowstone national park and attempts to bring the wolf's skull back to florida. which law i
    8·2 answers
  • Anyone wanna help me out with these questions word box at the top.
    9·1 answer
  • Which of the following is a characteristic of invasive species?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!