5 Questions
What are the two types of chromosomes classified based on their function?
Autosomes and sex chromosomes
How many pairs of autosomal chromosomes do humans have?
23 pairs
What is the chance of inheritance of an abnormal dominant gene from one parent?
50% for an affected child and 50% for a non-affected child
Which type of chromosomes determine the sex of an individual?
Sex chromosomes
How many chromosomes do males have in their sex chromosomes?
One X and one Y
Study Notes
Chromosomes and Inheritance
- Autosomes: non-sex chromosomes that come in pairs (1-22)
- Sex chromosomes: determine the sex of an individual, consisting of X and Y chromosomes
Autosomal and Sex Chromosomes
- Autosomal chromosomes: 23 pairs, totaling 46 chromosomes
- Sex chromosomes: one pair, consisting of X and Y
Dominant Inheritance
- A single abnormal gene from one parent is enough to cause disease
- Chance of inheritance: 50% for an affected child, 50% for a non-affected child if one parent carries the gene
X-Linked Recessive Inheritance
- Males have only one X chromosome, which is defective and can cause disease
- Chance of inheritance: dependent on the X chromosome, but specifics not provided
Learn about the classification of chromosomes, autosomes and sex chromosomes, and the probability of inheriting certain traits or diseases. This quiz covers the basics of genetics and inheritance.
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