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

Previous problemNext problem

Struggling with Genetics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following statements about sex chromosomes is incorrect?

The Y chromosome carries more genes than the X chromosome.

Some genes on the X chromosome are not related to sex determination.

Sex chromosomes determine the genetic sex of an individual.

In humans, females typically have two X chromosomes and males have one X and one Y chromosome.

Previous problemNext problem

Verified step by step guidance

Review the basic characteristics of human sex chromosomes: females typically have two X chromosomes (XX), and males have one X and one Y chromosome (XY).

Understand that sex chromosomes determine the genetic sex of an individual, with the presence of the Y chromosome generally leading to male development.

Recognize that the X chromosome carries many genes, some of which are unrelated to sex determination, meaning it has a broader genetic role beyond just determining sex.

Recall that the Y chromosome is much smaller than the X chromosome and carries fewer genes, primarily related to male sex determination and spermatogenesis.

Compare the gene content of the X and Y chromosomes to identify which statement is incorrect: since the Y chromosome carries fewer genes than the X chromosome, the statement claiming the Y chromosome carries more genes is incorrect.