Answer:
a. All of the answers are correct.
Explanation:
During conjugation a bacteria transfers it's genetic material to another bacteria. The genetic material has genes in a particular order so we can easily know the order of the genes through experimentation. The transfer of genes occurs as per the time allowed. If two genes are nearby then they will be transferred one after the other.
For example in the given question, gene A was transferred to recipient bacteria in 26 minutes, gene M was transferred in 37 minutes while gene T was transferred in 45 minutes, it simply means that the order of genes is A M T. Gene M was transferred to another bacteria after A was transferred because time required to transfer it is 37 minutes which is less than time required to transfer A which is 26 minutes. Gene T took maximum time to get transferred so it will be last to be transferred.
After calculation, we can easily infer that the genetic distance between A and M is 11 minutes (37 minutes - 26 minutes = 11 minutes). Similarly we can get genetic distance between A and T as 19 minutes and between M and T as 8 minutes. So all the given options are correct.
Answer:
c) phloem-sieve plate, sieve tube, companion cell
Answer:
He successfully and carefully performed a heart surgery on a man with a knife wound to the heart even though there were no X-ray machines to help him see into heart, while still making sure everything was done under antiseptic conditions.
Explanation:
Dr William Hale was in a dilemma when a black man with a knife wound to the heart stumbled into his hospital, Provident Hospital. Since there were no X-ray machines to help see into the heart the extent of the wound, the only option was opening the heart itself. It was a surgery no one had performed before, so it was a great risk. However, not performing the operation too was sure to result in the death of the man.
Dr William Hale confidently reassured the man that he could help. Assisted by other doctors, he carefully cut into the man's chest, examined the depth of the stab wound, found and repaired a torn blood vessel, stitched up the pericardium, and very carefully cleaned the wound and the chest cavity, to make sure that no infection set in. Afterwards, he sealed up the man's chest while still ensuring everything he did was done under antiseptic conditions. The man survived and lived in for many decades.
The answer is D Becuase sodium is salt which is in the chips
