AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The chromosomes that pair up during synapsis of meiosis, are called ____ chromosomes.
A
homozygous
B
asexual
C
homologous
D
genes
Explanation: 

Detailed explanation-1: -Synapsis is the pairing of two homologous chromosomes that occur during meiosis. This takes place during the prophase stage of meiosis I. When homologous chromosomes pair, the homolouges cross over and exchange genetic material at certain points. This process is called crossing over.

Detailed explanation-2: -Synapsis is the pairing of two homologous chromosomes that occur during meiosis. It allows matching up of homologous pairs prior to their segregation and possible chromosomal crossover between them. Synapsis take place during prophase 1 of meiosis.

Detailed explanation-3: -During prophase I, homologous chromosomes pair and form synapses, a step unique to meiosis. The paired chromosomes are called bivalents, and the formation of chiasmata caused by genetic recombination becomes apparent. Chromosomal condensation allows these to be viewed in the microscope.

Detailed explanation-4: -Synapsis is an event that occurs during meiosis in which homologous chromosomes pair with their counterparts and remain bound due to the exchange of genetic information. During meiosis, homologous chromosomes are paired and then separated to reduce the genetic content of the resulting gamete cells.

Detailed explanation-5: -Pairing of homologous chromosomes is an essential feature of meiosis, acting to promote high levels of recombination and to ensure segregation of homologs.

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