Answer:
Water is a polar molecule because its electrons are unevenly distributed.
Explanation:
Answer:
Promoter 2
Explanation:
Promoter 2 is the best choice because the resistance gene will only be expressed in the leaves of the corn plant. Promoter 3 only expresses genes in the corn roots, so the toxin would not be available in the leaves for the pest to eat. Promoters 1 and 4 would express the resistance gene in the leaves of the corn plant, but the toxins would be expressed in the corn cobs as well, which may then be fed to livestock.
Answer:
Explanation:
Deoxyribonucleic acid (DNA) is hereditary molecule found almost in every cell. Although it is very stable molecule but changes known as mutations may occur in this molecules. Deamination is also a type of mutation.
Deamination:
In deamination amino group is removed from Cytosine and produces uracil in DNA. This rate of conversion occurs about 100 bases per cell per day.
Sequence given in question is
... TACT... .
....ATGA...
After deamination the given sequence becomes
... TAUT... .
....ATAA...
<span>Metamorphism-because of the heat and pressure underground- would cause the chemicals to be squeezed together better than evaporation does</span>
Answer:
Telomerase
Explanation:
Repetitive regions at the ends of Chromosomes are known as telomeres and these are crucial for chromosomal stability. There is no gene present and they provide protection to internal parts of chromosome. The telomeres are eaten up slowly by ‘DNA REPAIR MECHANISM’ after many division cycles, which is considered as ageing. That why, a cell can divide only certain number of times.
Some cells have ability to express an enzyme telomerase that maintain the length of telomere. The telomerase enzyme contributes to cell immortality by rebuilding the damaged telomere. Thus telomerase enzyme is necessary for cancer initiation and survival of tumor. Telomerase enzyme can make its own DNA by using its RNA as template
. It extends the overhang strands of DNA by using a comlementary DNA.
