Biology, 30.11.2019 04:31 nathanthomasmoses
You insert a gene for tetracycline resistance into one plasmid and a gene for ampicillin resistance into another plasmid. you successfully introduce both plasmids into a sample of e. coli cells, but fail to grow any of them in culture medium with both antibiotics present in it. what could best explain the problem?
a. random mutation has inactivated the antibiotic resistance genes
b. plasmid incompatibility will not allow both plasmids to persist
c. e. coli cannot maintain two plasmids
d. the plasmid(s) have integrated into the bacterial chromosome
e. a phage has neutralized one of the plasmids
f. none of the above is correct
Answers: 2
Biology, 21.06.2019 20:30, akamya21
Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?
Answers: 2
Biology, 22.06.2019 07:30, ebookhardt917
The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body
Answers: 1
Biology, 22.06.2019 07:30, theuniicorntamer
Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides
Answers: 1
You insert a gene for tetracycline resistance into one plasmid and a gene for ampicillin resistance...
SAT, 28.12.2021 22:00
SAT, 28.12.2021 22:00