NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Name the event wherein the paternal and maternal chromosomes change their material with each other in cell division
A
Crossing over
B
Synapsis
C
Bivalent Formation
D
Dyad formation
Explanation: 

Detailed explanation-1: -The process of exchange of maternal and paternal chromosomes, is termed as recombination.

Detailed explanation-2: -So, the correct answer is ‘Crossing over’

Detailed explanation-3: -Crossing-over occurs during meiosis and refers to the exchange of chromatid parts between the maternal and paternal chromatids of a pair of homologous chromosomes.

Detailed explanation-4: -The paternal and maternal chromosomes are randomly sorted, such that the mix of chromosomes will be different from cell to cell. The two copies are inherited as if they were a single chromosome. Cells then enter another round of cell division, without DNA duplication-meiotic division 2, to form a gamete.

Detailed explanation-5: -Sexual reproduction is the creation of a new organism by combining the genetic material of two organisms. As both parents contribute half of the new organism’s genetic material, the offspring will have traits of both parents, but will not be exactly like either parent.

There is 1 question to complete.