41. The sister chromatids will be distributed to each daughter cell at the end of the cell division. 42. SDSA recombination involves information exchange between paired non-sister homologous chromatids , but not physical exchange. 43. Proper cohesion of sister chromatids is a prerequisite for the correct segregation of chromosomes during cell division. 44. Normally, the chromosomes are single-stranded, so there is one chromosome and one chromatid . 45. If you have 46 pairs of chromosomes, they first replicate their DNA to form 92 chromatids . 46. Diethylaniline may be genotoxic because it has been found to increase the rate of sister chromatid exchange. 47. Therefore, the resulting sister chromatids cannot separate from each other and cannot divide into 2 daughter cells. 48. First, the cell undergoes DNA replication, so each homolog now consists of two identical sister chromatids . 49. During homologous sites on two chromatids can closely pair with one another, and may exchange genetic information. 50. The centromere is required for binding spindle fibres to separate sister chromatids into daughter cells during cell division.
