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

Is it possible for a single offspring to inherit both sex chromosomes (X and Y) from only one parent in humans?

Yes, but only in cases of chromosomal nondisjunction.

Yes, both sex chromosomes can be inherited from the mother.

Yes, both sex chromosomes can be inherited from the father.

No, each parent contributes one sex chromosome to the offspring.

Previous problemNext problem

Verified step by step guidance

Understand the normal inheritance pattern of sex chromosomes in humans: typically, the mother contributes one X chromosome, and the father contributes either an X or a Y chromosome, determining the sex of the offspring.

Recall that each parent normally passes on only one sex chromosome to their child, so the offspring inherits one sex chromosome from the mother and one from the father.

Consider the concept of chromosomal nondisjunction, which is an error during meiosis where chromosomes fail to separate properly, potentially leading to gametes with abnormal numbers of chromosomes.

Analyze whether nondisjunction could result in an offspring inheriting both sex chromosomes (X and Y) from a single parent, which would be an abnormal and rare event, not the typical case.

Conclude that under normal circumstances, it is not possible for a single offspring to inherit both sex chromosomes from only one parent, as each parent contributes one sex chromosome.