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

1. Introduction to Genetics

Fundamentals of Genetics

Genetics

1. Introduction to Genetics

Fundamentals of Genetics

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Multiple Choice

Which of the following is true of an organism that has a chromosome number of 2n = 16?

It has 8 pairs of homologous chromosomes.

It has 16 pairs of homologous chromosomes.

It has 8 chromosomes in total.

It is a haploid organism.

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Verified step by step guidance

Understand the meaning of the notation 2n = 16. Here, '2n' represents the diploid number of chromosomes, which means the total number of chromosomes in a somatic (non-reproductive) cell of the organism.

Recall that 'n' represents the haploid number, which is the number of chromosomes in a gamete (sex cell). Since 2n = 16, the haploid number n is half of 16, so n = 8.

Recognize that diploid organisms have chromosomes arranged in homologous pairs. Each pair consists of two chromosomes, one inherited from each parent.

Calculate the number of homologous pairs by dividing the total chromosome number (2n) by 2: number of pairs = 16 / 2 = 8 pairs.

Evaluate the given options based on these calculations: the organism has 8 pairs of homologous chromosomes, not 16 pairs; it has 16 chromosomes in total, not 8; and since it is diploid (2n), it is not haploid.