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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

9. Mitosis and Meiosis

Meiosis

Genetics

9. Mitosis and Meiosis

Meiosis

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Multiple Choice

During metaphase I of meiosis in an elephant cell with 2n = 56 chromosomes, how many tetrads are present?

112

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Verified step by step guidance

Identify the diploid number (2n) of chromosomes in the elephant cell, which is given as 56.

Recall that during metaphase I of meiosis, homologous chromosomes pair up to form tetrads. Each tetrad consists of two homologous chromosomes, each made of two sister chromatids.

Calculate the number of tetrads by dividing the diploid number by 2, since each tetrad represents one pair of homologous chromosomes.

Express the calculation as an equation: $\text{Number of tetrads} = \frac{2n}{2}$.

Substitute the given value into the equation: $\text{Number of tetrads} = \frac{56}{2}$, which will give the number of tetrads present during metaphase I.