The introduction of a small interfering RNA (siRNA) complementary to the flc mRNA in Arabidopsis would likely result in the repression of the flc gene and promote flowering.
The siRNA would bind to the complementary flc mRNA, leading to its degradation through RNA interference (RNAi) or preventing its translation into the transcription factor protein that represses flowering. This would decrease the concentration of the FLC protein, releasing the repression of flowering genes, and leading to an increase in flowering in Arabidopsis.
siRNA technology can be used to target specific genes and regulate their expression in plants, animals, and other organisms. In this case, it can be used to manipulate the expression of the flc gene and promote flowering in Arabidopsis, providing a potential tool for crop improvement and genetic research.
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a. 3
b. 4
c. 5
d. 6
extinction because of a fungus. The fungus, called white-nose syndrome, grows on the
exposed skin of bats as they hibernate in cool caves or mines. Infected bats develop lesions
(sores) on their wings, which play important roles in water balance, circulation and heat regulation.
These lesions on a bat’s wings or on its nose cause the bat to wake up during hibernation.
Waking up early forces the bat to use up the energy it has stored as fat for its long
sleep, exhausting the animal and eventually killing it.
In some infected caves, 90 percent to 100 percent of bats die. On average, the disease
takes out 73 percent of the bat population at a given hibernation site. If infection continues
at current rates, the researchers predict that the little brown bat population will drop below
0.01 percent of its current numbers by 2026.
The loss of the little brown bat would be harmful for humans because bats eat their
body weight in insects each night. Many of these bugs are agricultural pests or carriers of
human disease.
One way to decrease the spread of the disease would be for the researchers who visit
infected caves to decontaminate their clothes and gear with antiseptics. It has also been suggested
that a small number of these bats could be placed in an artificial hibernating area
and medicated to protect them.
Describe one way that an infection with the white-nose fungus can cause death in little brown bats.
only let individuals breed with other individuals that have very different characteristics
increase a population's territory
remove individuals from a population
B. nucleolus.
C. chromatin.
D. DNA.
Answer:
Option A, Cytoplasm
Explanation:
Cytoplasm is the fluid contained with in the cell membrane into which all cell organelles are found including the nucleus. Cytoplasm basically has two parts a) endoplasm and b) ectoplasm. The endoplasm has all the organelles while the ectoplasm is the fluid at the periphery of cell membrane. The cell memebrane keep the cytoplasm confined with in the cell and does not allow it to spill.
Since all the cell components are found with in the cytoplasm, it is clear that cytoplasm lies out of the nucleus. Thus, option A is correct.
Answer:
The correct answer will be option- A
Explanation:
The nucleus is the membrane organelle which encloses the DNA of the organisms. The presence of the nucleus is the characteristic feature of the eukaryotes.
The nucleus encloses the genetic material in the form of either DNA or a loosely arranged structure called chromatin. The nucleus also contains a structure called nucleolus distinguished by a dense round structure during the interphase.
Since the nucleus lacks the cytoplasm which is enclosed by the cell membrane of the cell therefore, option-A is the correct answer.