Answer:
Your answer should be D. A section of DNA that codes for a specific trait.
The question is incomplete as it does not have the options which are:
The empty vector would migrate the same distance as the cloned vector.
It is impossible to know without knowing the identity of the gene of interest.
The empty vector would migrate farther down than the cloned vector.
The cloned vector would migrate farther down than the cloned vector.
Answer:
The empty vector would migrate farther down than the cloned vector.
Explanation:
In recombinant technology, an empty vector is considered a vector which is present without the gene of interest and thus is of small size and the cloned vector is the vector which has a gene of interest along with the usual sequence.
The cloned vector is larger compared to the empty vector as the cloned vector has a gene of interest whereas the empty vector does not have.
In-gel electrophoresis technique, the DNA samples are run and the size of the fragment is known according to the ladder sequence which is used as a reference and have the band size in increasing order from lower side to upper side.
When the vectors sun on the gel, the small size gene will move faster and to the farthest distance compared to the larger DNA that is empty vector will cover the maximum distance while the cloned vector will cover the less distance.
Thus, the selected option is correct.
Apocrine glands secrete in response to emotional stimuli
Answer:
(a) <em>Total peripheral resistance</em>: (2) the amount of friction blood encounters during flow through blood vessels.
(b) <em>Blood pressure</em>: (4) the force of the blood against the vessel wall.
(c) <em>Cardiac output</em>: (1) the volume of blood pumped out by one ventricle each minute.
(d) <em>Blood viscosity</em>: (3) the friction red blood cells encounter when moving past each other.
Explanation:
- <u>Total peripheral resistance</u>: This term refers to the resistance offered by the vascular system to the blood flow. This resistance is a result of the friction between the blood and the vessel's walls. In other words, it is the opposition of the vessels to blood flow. T<em>he total peripheral resistance is the summary of all the bloody circuit resistances in the body</em>. Those mechanisms that induce <u><em>vasoconstriction</em></u> conduce to an i<em>ncrease in total peripheral resistance</em>, while mechanisms that induce <u><em>vasodilation</em></u> provoke a <em>decrease in total peripheral resistance</em>.
- <u>Blood pressure</u>: This term refers to the strength applied by the blood against the vessel walls as it flows. This pressure is determined by the bombed blood strength and the volume as well as by the vessel size and flexibility. Blood pressure changes continuously according to the activity, temperature, diet, emotional state, among others.
- <u>Cardiac output</u>: Volume of blood that is pumped by the heart per unit of time. The cardiac output depends on the volume of blood pumped by a ventricle by beat.
- <u>Blood viscosity</u>: It is a resistance measurement to flow. The blood viscosity increases as the number of blood cells increase. <em>The more viscose is the blood, the more resistance to movement it is, and the more blood pressure it requires to flow through vessels</em>. Blood viscosity might be dangerous as it might cause uncontrolled coagulation.
