Learning objective
Recall that ordinary human body cells contain 23 pairs of chromosomes.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Reproduction
Subtopic
Sex determination
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Understand this objective
Quick explanation
Recall that ordinary human body cells contain 23 pairs of chromosomes
- This point belongs to Reproduction, especially Sex determination.
- You need to be able to recall that ordinary human body cells contain 23 pairs of chromosomes.
- The key ideas to know are body, ordinary, and human.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Sex determination to exam-style questions, flashcards, and revision notes for Reproduction.
Quick student answer
What should you know about ordinary human body cells contain 23 pairs of chromosomes?
Direct answer
In Biology, this page helps you answer questions about ordinary human body cells contain 23 pairs of chromosomes within Reproduction. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are chromosome pairs and human body cells.
Key terms
- chromosome pairs: Ordinary human body cells contain 23 pairs of chromosomes, which include 22 pairs that control characteristics and one pair that determines sex.
- human body cells: Cells in the human body that contain genetic material organized into 23 pairs of chromosomes.
Common trap
Misunderstanding Chromosome Pairs: Emphasize that while humans have 46 chromosomes, they are organized into 23 pairs, and clarify the distinction between total chromosomes and pairs.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe sexual reproduction as the joining or fusion of male and female gametes.
Sexual and asexual reproduction
- Identify sperm and egg cells as animal gametes and pollen and egg cells as flowering plant gametes.
Sexual and asexual reproduction
- Explain that sexual reproduction mixes genetic information and produces variation in offspring.
Sexual and asexual reproduction
- State that gamete formation in sexual reproduction involves meiosis.
Sexual and asexual reproduction
- Describe asexual reproduction as reproduction involving one parent, no gamete fusion and no mixing of genetic information.
Sexual and asexual reproduction