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1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

4. Genetic Mapping and Linkage

Crossing Over and Recombinants

Genetics

4. Genetic Mapping and Linkage

Crossing Over and Recombinants

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Multiple Choice

Crossing over is the process in which ______.

homologous chromosomes exchange genetic material during meiosis

sister chromatids separate during mitosis

DNA is replicated prior to cell division

chromosomes condense and become visible under a microscope

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Verified step by step guidance

Understand the context of crossing over, which occurs during meiosis, a type of cell division that produces gametes (sperm and egg cells).

Recall that homologous chromosomes are pairs of chromosomes, one from each parent, that have the same genes but may have different alleles.

Recognize that crossing over involves the physical exchange of genetic material between these homologous chromosomes, increasing genetic diversity.

Note that sister chromatids are identical copies of a single chromosome and their separation happens during mitosis and meiosis II, not during crossing over.

Conclude that crossing over specifically refers to homologous chromosomes exchanging genetic material during meiosis, which is different from DNA replication or chromosome condensation.