Answer:
a The pulmonary artery carries deoxygenated blood.
Explanation:
This is the the only artery that transports deoxygented blood in mammals. specifically it carry deoxgenated blood from the the atria to the pulmonary circulation. That is to the lungs for the exchange of the C02 in the deoxygenated blood with oxygen in the lungs.
The blood thus become oxygenated,and therefore return through the pulmonary veins to the left ventricle.
From the left ventricle ,through ventricular systole,blood is empty into the aorta through the aortic valves into the systemic circulation.
Although,they carry blood away from the heart,but the blood is de oxygenated instead of the usual oxygenated by arteries,They are still regarded as arteries because of convey of blood away from the heart,a typical role of arteries
Answer:
its c
Explanation:
because infastructure alludes to the major offices
Answer:
E. 1/600
Explanation:
Hint:
The probability of fixation of a new neutral mutation is 1/(2N)
Given N as 300
= 1/(2×300)
=1/600
Therefore,
1/600 gives a sure fixation of one allele from the large population
Answer:
The answer is the heat resistance of DNA and the "transformation" process.
Explanation:
The experiment showed that after inactivating the cell with heat, the DNA was intact, and through a transformation process, or what we know now as Horizontal transference of genes, the R bacteria could adapt the genetic features that allowed the S bacteria to kill the mouse.
Answer:
Male baboons eavesdrop on mating couples to determine the status of their relationships, scientists show. Mating chacma baboons produce an incredible amount of noise; males grunt and females emit loud and long operatic calls. This is because higher-ranked, more dominant males otherwise monopolize high-ranked females.
Explanation: