Answer:
<u>Antigenic drift</u> refers to the slow accumulation of genetic changes to an influenza virus over time.
Explanation:
Antigenic drift is defined as the mechanism by which viruses undergo variation. This mechanism involves the slow accumulation of mutations in the viral genes, that are responsible for coding the antibody binding sites. This leads to the formation of a new strain of virus, which can't be inhibited by the old antibodies. Due to this, the virus can easily spread the disease.
The antigenic drift occurs in the influenza A virus and also the influenza B viruses.
Therefore, <u>Antigenic drift refers to the slow accumulation of genetic changes to an influenza virus over time.</u>
Answer:
(1) Amoeboid protozoans or sarcodines
They are unicellular, jelly-like protozoa found in fresh or sea water and in moist soil.
(2) Flagellated protozoans or zooflagellates
They are free living, non-photosynthetic flagellates without a cell wall.
(3) Ciliated protozoans or ciliates
They are aquatic individuals that form a large group of protozoa.
Explanation:
hope this helps :}
Answer:
Its a Anaphase
because <u>the</u><u> </u><u>chromatids</u><u> </u><u>of</u><u> </u><u>each</u><u> </u><u>chromosomes</u><u> </u><u>have</u><u> </u><u>separated</u><u> </u><u>and</u><u> </u><u>are</u><u> </u><u>moving</u><u> </u><u>towards</u><u> </u><u>the</u><u> </u><u>poles</u>
p = m / V (Density = Mass / Volume)
p = m / (w * l * h) (Density = Mass / [Width * length * height]) (V = w * l * h)
p = 120 / (5 * 4 * 3) (Mass = 120g [Given] w=5 l=4 h=3 [Given])
p = 120 / 60
p = 2 g/cm^3
Answer is B (2)
What are the options? I’ll help if u send the choices:)
