Table of contents

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

2. Mendel's Laws of Inheritance

Sex-Linked Genes

Genetics

2. Mendel's Laws of Inheritance

Sex-Linked Genes

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Multiple Choice

Which of the following statements about the nuclei in most cells of a typical mushroom (the fruiting body of a basidiomycete fungus) is correct?

Most cells are diploid.

Most cells contain two haploid nuclei (dikaryotic).

Most cells contain only a single haploid nucleus.

Most cells are triploid.

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Verified step by step guidance

Understand the life cycle of basidiomycete fungi, focusing on the nuclear condition of cells in the fruiting body (mushroom).

Recall that basidiomycetes have a unique stage called the dikaryotic stage, where cells contain two haploid nuclei from different parent mycelia that coexist without fusing immediately.

Recognize that in the mushroom (fruiting body), most cells are in this dikaryotic state, meaning they have two separate haploid nuclei per cell rather than being diploid or having a single haploid nucleus.

Note that the diploid stage in basidiomycetes is very brief and occurs only in specialized cells (basidia) where karyogamy happens, followed quickly by meiosis.

Conclude that the correct statement is that most cells in the mushroom contain two haploid nuclei (dikaryotic), distinguishing this from diploid or single haploid nucleus conditions.