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

3. Extensions to Mendelian Inheritance

Sex Chromosome

Genetics

3. Extensions to Mendelian Inheritance

Sex Chromosome

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Multiple Choice

Which term describes a cell that has at least one extra set of chromosomes?

Polyploid

Aneuploid

Diploid

Haploid

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Verified step by step guidance

Understand the definitions of the terms related to chromosome number in cells: Haploid refers to a cell with one complete set of chromosomes, Diploid refers to a cell with two complete sets, Aneuploid refers to a cell with an abnormal number of chromosomes that is not a complete set, and Polyploid refers to a cell with one or more extra complete sets of chromosomes beyond the normal diploid number.

Recognize that the question asks for a term describing a cell with at least one extra set of chromosomes, which means the cell has more than two complete sets of chromosomes.

Recall that Aneuploidy involves missing or extra individual chromosomes, but not entire sets, so it does not fit the description of having extra complete sets.

Identify that Polyploidy is the condition where a cell contains more than two complete sets of chromosomes, such as triploid (3 sets), tetraploid (4 sets), etc., which matches the description given in the question.

Conclude that the correct term for a cell with at least one extra set of chromosomes is Polyploid.