A species that lacks adaptation to a changing environment is more likely to

hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support

Gwar [14]

Hi,

Harshey and Chase did a great experimentation which was basically a two step experiment to prove that DNA and not proteins are the actual carriers of genetic information from parents to offspring.

In the first part of their experiment, they used bacteriophages (virus that eat bacteria). They used radioactively labeled sulphur(35S) medium to grow bacteriophages and observed that all the bacteriophages had proteins with radioactive sulphur(35S).

In the next step they allowed these phages to infect bacteria and to their surprise, they found that the bacteria did not had radioactively labeled sulphur in them because the coat of bacteriophage stays outside the body of bacteria when it attacks it. This proved that DNA not proteins were the hereditary material.

To make their results more reliable, they did a second experimentation in which, they marked the DNA of the phage with radioactive phosphorus 32P. After labeling DNA, they repeated the same experiment and this time, they found radioactive phosphorus inside the bacteria.

This meant that the bacteria had DNA of phage entered inside them and this again proved that DNA not proteins are the hereditary material. You can see attached image for better understanding.

Hope it help!

7 0

3 years ago

Freshwater marshes occur beside rivers and oceans ? True or False

Phoenix [80]

Freshwater marshes occur beside rivers and oceans.

Yes, this statement is true .

Freshwater marshes conatins fresh water . They are generally found near the river mouths. They are found along the fringes of lakes and rivers where the water table, the upper surface of underground water, is very high. Marshes are useful for the damage cause by the flood storing the water.

4 0

2 years ago

Macrophages express multiple types of receptors on their surface that stimulate phagocytosis of microbes, leading to pathogen in

Vinil7 [7]

Answer:

C. Mannose receptor

Explanation:

They are soluble receptors used by macrophages to aid phagocytosis. They are not associated with the phagocyte membrane and thus helps the macrophages to act on cells without getting in contact with the membrane

6 0

2 years ago

What can cause rapid evolution?

ElenaW [278]

Change in environment

8 0

3 years ago

Read 2 more answers

5 Disorders of the Nervous System. (i need it ASAP) PLSSS

Annette [7]

Answer:

1.)Parkinson's disease 2.)Multiple sclerosis 3.)Alzheimer's disease 4.)Amyotrophic lateral sclerosis 5.)Huntington's disease