5 Questions
Which type of chromosomes determine gender in mammals?
XY
How many pairs of chromosomes are there in human body cells?
23
What is the term for chromosomes that have the same length of DNA and code for the same proteins?
Homologous chromosomes
What is the diploid number of chromosomes in human cells?
46
What does the term 'diploid' refer to?
Complete chromosome sets in a cell
Study Notes
Chromosomes and Gender
- Sex chromosomes (X and Y) determine gender in mammals.
- Females have XX sex chromosomes, while males have XY sex chromosomes.
Human Chromosomes
- There are 23 pairs of chromosomes in human body cells.
- This means that each human body cell has a total of 46 chromosomes.
Homologous Chromosomes
- Homologous chromosomes are chromosomes that have the same length of DNA and code for the same proteins.
- They are paired together, one inherited from each parent, and have the same genes in the same order.
Diploid Number
- The diploid number of chromosomes in human cells is 46.
- This is the number of chromosomes in a non-reproductive cell (somatic cell).
Diploid Definition
- The term 'diploid' refers to a cell that has two sets of chromosomes, one inherited from each parent.
- Diploid cells have a full complement of chromosomes, which is 46 in humans.
Test your knowledge about chromosomes and meiosis with this quiz. Learn about the two types of chromosomes found in cells, autosomes and sex chromosomes, and understand their role in determining gender. Explore the structure of homologous chromosome pairs and how they are inherited from each parent.
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