NEET PG DENTAL EXAM

EMBRYOLOGY

CHROMOSOMES AND CELL DIVISIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
During meiosis, chromosome pairs
A
duplicate and are distributed to 2 different cells
B
separate and are distributed to 4 different cells
C
combine and are distributed to 4 different cells
D
None of the above
Explanation: 

Detailed explanation-1: -Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.

Detailed explanation-2: -During anaphase I, the homologous chromosome pairs separate and are pulled to opposite poles of the cell by spindle fibers attached to the centrioles. This first cell division process is completed during telophase I. Separate nuclear membranes form.

Detailed explanation-3: -Meiosis results in reduction of chromosome number to half. Hence, if daughter cells have 4 chromosome, the original parent or mother cell must have 8 chromosomes.

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