Meiosis Problem Help: Selecting Correct Answer

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SUMMARY

The discussion centers on a meiosis problem regarding crossing over, specifically identifying the incorrect statement among several options. The correct answer is option A, which states that crossing over occurs between non-homologous chromosomes during prophase I of meiosis. In reality, crossing over occurs between homologous chromosomes, making option A false. The other options correctly describe aspects of crossing over during meiosis.

PREREQUISITES
  • Understanding of meiosis and its stages, particularly prophase I.
  • Knowledge of homologous versus non-homologous chromosomes.
  • Familiarity with the concept of crossing over and its significance in genetic diversity.
  • Basic grasp of tetrads and bivalents in meiosis.
NEXT STEPS
  • Study the stages of meiosis in detail, focusing on prophase I.
  • Learn about the mechanisms and significance of crossing over in genetic variation.
  • Explore the differences between meiosis and mitosis, particularly in terms of chromosome behavior.
  • Review genetic terminology related to homologous and non-homologous chromosomes.
USEFUL FOR

Students preparing for biology exams, educators teaching genetics, and anyone interested in understanding the mechanisms of meiosis and genetic recombination.

Ester
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Hi, I'm doing some studying before the exam and I'm not clear about a certain concept regarding the following question:

"Select the choice that is NOT true. Crossing over
A. Occurs between non-homologous chromosomes during prophase I of meiosis.
B. Occurs during prophase I of meiosis.
C. Involves only two chromatids in the bivalent(tetrad)
D. Is equal and reciprocal.
E. Cannot take place during mitosis.

Is the answer A? (because crossing over occurse between HOMOLOGOUS chromosomes during prophase I of meiosis?)
 
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Yes, you are exactly correct. :smile:
 

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