What aspect of chromosome behaviour most clearly accounts for Mendel's law of segregation?
A) Movement of sister chromatids to opposite poles at anaphase II of meiosis
B) Movement of homologous chromosomes to opposite poles at anaphase I of meiosis
C) Crossing-over between homologous chromosomes during prophase I of meiosis
D) Replication of chromosomes prior to meiosis
E) Independent alignment of different homologous pairs on the metaphase I spindle

Question

Quizplus · Accepted Answer

Mendel's law of segregation states that during gamete formation, the two alleles for a trait separate, with only one allele present in each gamete. This is due to the separation of homologous chromosomes during anaphase I of meiosis, with each gamete receiving only one member of each homologous pair.

What Aspect of Chromosome Behaviour Most Clearly Accounts for Mendel's