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
Arlecino [84]
4 years ago
15

Meselson and Stahl's experiments proved that DNA replicates by which mode?

Biology
1 answer:
Irina18 [472]4 years ago
6 0

Answer:

Semi-conservative

Explanation:

Meselson–Stahl experiment proved that DNA replication is a semiconservative process, feeding E. colo bacteria with different types of Nitrogen isotopes (N14 and N15).

Changing the type of radioactive compound in different times of bacteria grow, they could observe that both of the isotopes were present on the bacteria culture.

Basically, if the bacteria present both of them, the DNA was replicated semiconcervely.

Guess what? they show both! (See the image for more information)

You might be interested in
Explain the bonding of a sugar molecule.
romanna [79]

Answer:The chemical or molecular formula for sucrose is C12H22O11, which means each molecule of sugar contains 12 carbon atoms, 22 hydrogen atoms and 11 oxygen atoms. The type of sugar called sucrose is also known as saccharose. It is a saccharide that is made in many different plants.

5 0
3 years ago
5. If a galaxy is moving away from us, what would happen to the wavelengths of light that we see? How
SpyIntel [72]

The visible light spectrum. Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. ... When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.

5 0
3 years ago
Circle the 3 water molecules on the image
Phoenix [80]
This should be correct, but it is not a 100% guarantee on my part.

8 0
4 years ago
A low mass star that converts helium to carbon is a
kotykmax [81]

Answer:

 I believe it's a Core-fusion star.

Explanation:

8 0
4 years ago
Which is a method of making many copies of DNA?
AlexFokin [52]

Answer:

D. Polymerase chain reaction

Explanation:

PCR is very percise; used to amplify or copy a specific DNA target from a mixture of DNA molecules by:

  • two short DNA sequences (primers) are bind to start and end the DNA target
  • perform the PCR; DNA templates is added to a tube that contains primers, free nucleotides, and the enzyme (DNA polymearse)
  • it is mixed in a PCR machine that increases and decreases the temperature of the sample
  • mixture is heated to seperate the double strnaded DNA templated into single strands
  • mixture is cooled so the primers can bind to the DNA template
  • the DNA polymerase will synthesize to new strands of DNA from the primers
  • during synthesis, the end of the first cycle, the DNA molecule will consist of a new and old DNA strand
  • PCR continues with added cycles to repeat the steps
  • newly synthesized DNA segements serve as templates in later cycles; which can be copied over and over.
3 0
3 years ago
Other questions:
  • The pituitary gland is controlled by the hypothalamus. <br> a. True <br> b. False
    14·2 answers
  • How did Aristote classify organisms
    9·1 answer
  • Carbon first enters the food web in Multiple Choice humans. vertebrates. invertebrates. green plants. soil bacteria
    9·1 answer
  • What are reserves? Thanksssssssssssssssssss
    14·1 answer
  • Summarize the main events of the electron transport chain
    13·1 answer
  • Bud, age 10, was born with short fingers, slanted eyes, and a protruding tongue. he is moderately intellectually disabled. his p
    10·2 answers
  • In August 2005, Hurricane Katrina caused significant damage in several states along the Gulf Coast, including Alabama, Mississip
    15·2 answers
  • Topsoil is the horizon in Figure 7-1.
    14·2 answers
  • Will give brainliest to whoever helps me PLEASE
    14·1 answer
  • Whats is friction?????
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!