Question

Amitosis was discovered by remak in
A. 1841
B. 1855
C. 1880
D. 1905

Answer 1

Robert Remak within the year 1855 defined the amitosis for the primary time in red blood corpuscles of the chick embryo. The meaning of amitosis isn’t any mitosis that results in the formation of two daughter cells without undergoing a mitosis system.

Complete answer:
One in each of the techniques of nuclear division in protozoans and plant and animal cells. Amitosis was first described through the German biologist R. With amitosis, in evaluation to mitosis, or indirect nuclear division, the nuclear membrane and nucleoli aren’t destroyed, a cleavage spindle isn’t formed within the nucleus, and additionally, the chromosomes continue to be functioning. Both the nucleus undergoes segmentation, and a septum seems within the externally unchanged nucleus. The division of the cell body—cytoto-my—as a rule, doesn’t occur. Ordinarily, amitosis doesn’t provide even division of the nucleus and its components.
The study of amitosis is complex by the unreliability of determining it from morphologic capabilities, because now not every constriction of the nucleus often causes amitosis. Even expressed “dumbbell-like” constrictions of the nucleus are often transitory. In most cases, with amitosis, only the nucleus divides and a binucleate cell takes place. With repeated amitosis, polynucleated cells can form. A particular number of binucleate cells are formed with the mitotic division of the nucleus without the division of the cell body

Hence, the correct answer is option B, Amitosis was discovered by remak in 1855.

Note: Amitosis is that the process of direct cellular division in eukaryotes. Even as ordinary mitosis ends to a definite division of parental alleles, amitosis leads to a random distribution of parental alleles.