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
Alexandra [31]
3 years ago
8

Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and are allowed to replicate for 1 generatio

n. The DNA is subsequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s)?
Biology
1 answer:
ahrayia [7]3 years ago
4 0

Answer:

The intermediate density band is observed.

Explanation:

Messelson and Sthal's explained the model of  semi conservative nature of DNA replication. According to this model, the newly synthesized DNA molecule contains one newly synthesized strand and one parental strand.

Firstly, bacteria grown in 15N media is transferred to 14N media. The isolated DNA is centrifuged and intermediate density DNA  band is observed that contains one strand of 15N (parental strand) and one strand of 14N (newly synthesized strand).

You might be interested in
Cattle egret follow herds of cattle and feed on both the insects stirred by the movement of the cattle and the biting insects th
kirill115 [55]

Commensalism relationship is shown between cattle egret and cattle.

Usually cattle egrets follow herds of large hoofed mammals such as cattle, buffalo. They eat the insects that have been stirred up by the buffalo as they move. This relationship is commensalism, because the birds benefit but the ungulate is neither harmed nor helped.

The cattle egret and grazing cattle in a close association is a classic example of commensalism. It is a common sight in rural areas where one can see ticks hovering over the cattle. They feed on cattle's blood and hence are harmful to them as they can transmit several diseases. The cattle egret and grazing cattle in a close association is a classic example of commensalism. It is a common sight in rural areas where one can see ticks hovering over the cattle. They feed on cattle's blood and hence are harmful to them as they can transmit several diseases.

To learn more about commensalism , here

brainly.com/question/14224704

#SPJ4

8 0
2 years ago
What factor makes the Hawaiian Islands the perfect place for plant species to diversify?
forsale [732]

Answer:

Climate

Water Supply

Resources

Explanation:

Answer in my own words:

The weather offers a large amount of water and warm temperatures. This services have all the essential tools to sustain plant life or the plant health.

Key words:

1: Sustain

2: Essential

<em><u>Hope this helps.</u></em>

7 0
3 years ago
Read 2 more answers
16
Rainbow [258]

Answer:

An organism with five pairs of chromosomes can have 32 genetic possibilities from a variety independent of its single gamete.

6 0
3 years ago
Which of these is an example of precipitation?
Ymorist [56]

Answer:

A. A steady drizzle falls in Pittsburgh.  

Explanation:

Precipitation is any kind of weather in which something is falling from the sky.

A drizzle consists of small water droplets coming from the sky.

B, C, and D are wrong, because nothing is coming from the sky.

8 0
3 years ago
Which of the following is not a good polling technique? A. asking clear questions B. using a push poll C. using a large sample D
svetlana [45]
Question is which is NOT a good technique.
Answer is "B" and here's why:

A) Clear questions -- good. People understanding the question will answer accurately.
C) Large sample size -- good. Answers will be more accurate with more people asked (like if you flip a coin 1,000 times its going to be closer to 50% heads than if you only flipped it twice)
D) Random sample -- good. Avoids your own bias in choosing who to ask.

B) Push poll -- bad. Pretends to be unbiased, the pollster's real objective is to get a person thinking in a way that is to their advantage. Some political candidates do this just before elections.
3 0
3 years ago
Other questions:
  • Describe how proteins fold, mentioning at least three rules followed by the amino acids.
    13·1 answer
  • Define purebred using both terms genotype and allele.
    5·1 answer
  • Planets That are light and fast
    15·2 answers
  • . What are, and what are the distinguishing characters, of the two major groups of Protostomes? 2. Look at the phylogeny of the
    10·1 answer
  • What is the purpose of the cilia of the cells that line the respiratory lining?
    10·1 answer
  • ILL MARK YOU BRIANLYEST
    13·1 answer
  • Please help....anyone
    10·1 answer
  • Which of the following is NOT an example of a biotic factor in an ecosystem?
    10·1 answer
  • What type of reproduction involves forming offspring from one parent
    6·1 answer
  • Define dark reaction ?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!