![starsinopoli13](/avatars/28760.jpg)
starsinopoli13
22.07.2019 •
Biology
Colorblindness is more common in males than in females because a. the allele for colorblindness is dominant and located on the x chromosome. b. the allele for colorblindness is recessive and located on the x chromosome
Solved
Show answers
More tips
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
Answers on questions: Biology
- B Biology El uso incorrecto de la mascarilla ayuda a propagar el virus...
- G Geography All cells contain ion pumps that use the energy of ATP hydrolysis to pump ions across the plasma membrane. These pumps create an electrochemical gradient across the...
- B Biology Androgen insensitivity is caused by lack of a specific protein...
Ответ:
Mark brainliest if I helped you.
Ответ:
The correct answer will be- there is some transforming principle which transformed the harmless bacteria to harmful bacteria.
Explanation:
Griffith performed the experiment on infection caused by the Streptococcus pneumonia in mice. He selected two strains of bacteria: avirulent strain called R strain and a virulent strain called S strain.
During the experiment, when he heat-killed the S bacteria, added it to the R strain bacterial plates and then injected the bacteria into mice, he found that the bacteria killed the mice. He was astonished to see the result as the harmless bacteria killed the mice.
He concluded that adding the S bacteria produced some molecule which could have transformed the harmless bacteria to harmful bacteria. He called the transforming molecule as transforming principle.
Griffith performed the experiment on two strains of Streptococcus pneumonia in which one strain is avirulent called R strain and another virulent strain called S strain.
When Griffith killed the S bacteria (virulent) by heat and added it in the R strain Petri dishes and then injected the bacteria to mice, the mice killed. This amazed him as to how the avirulent bacteria killed the mice ?
He concluded that there was some principle which transformed the avirulent bacteria to virulent bacteria and thus called the principle as transforming principle.