Answer:
S strain
Explanation:
The Avery experiment demonstrated DNA is the genetic material. It expanded upon the findings made by Griffith.
They used Pneumococcus; Smooth strain which was virulent and the Rough which was not.
Cultures of heat killed smooth strain were prepared after which it was treated with DNases ,RNases and Proteinases to remove DNA, RNA, and proteins respectively. It will then be introduced to living Rough strain.
When treated with RNases only the RNA will be destroyed and transformation will take place leading to colonies of S stains being formed.
Only when treated with DNase did the colonies S strain fail to be formed.
The given blanks can be filled with the ability to take up foreign DNA and express proteins faster.
The direct manipulation of the genes of an organism with the application of biotechnology is known as genetic engineering. It is an array of technologies that are utilized to modify the genetic make-up of an organism, involving the transfer of genes across and within the boundaries of the species to generate novel or bettered organisms.
In genetic engineering, bacteria play a key role, as it is an essential tool for natural scientists. The genes and other genetic information from a broad array of species can be administered into bacteria for modification and storage, thus producing genetically modified bacteria in the procedure.
The bacteria possess the tendency to take up foreign DNA and expresses the desired proteins at a faster rate.
Answer:
a. population
Explanation:
Gene flow cannot occur in hybrids because 99.9% of the time hybrids offspring are not fertile.
At genus level is not possible either because a hybrid is a cross breed at the genus level (horse-donkey).
A population is a group of species of 1 kind. A population of donkeys.
Answer:
Trophic cascades are powerful indirect interactions that can control entire ecosystems. Trophic cascades occur when predators limit the density and/or behavior of their prey and thereby enhance survival of the next lower trophic level.
Explanation:
B. Being new to the country, it is safer for Sarah to take precautions until she gets acclimated
I believe this is the answer as the other answers take too many assumptions as the question doesn't explicitely state that Sarah has skin problems.
