Which Aspect(s)of Chromosome Behaviour Is/are Primarily Responsible for the Tremendous

question 63

Multiple Choice

Which aspect(s) of chromosome behaviour is/are primarily responsible for the tremendous amount of genetic variability associated with sexual reproduction?

• A) Segregation of sister chromatids at anaphase II of meiosis
• B) Segregation of homologous chromosomes at anaphase I of meiosis
• C) Crossing-over between homologous chromosomes during prophase I of meiosis
• D) Independent alignment of different homologous pairs on the metaphase I spindle
• E) Both crossing-over between homologous chromosomes during prophase I of meiosis and independent alignment of different homologous pairs on the metaphase I spindle contribute to genetic variability