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Questions and Answers
What is the chemical that is sometimes described as the blueprint of life?
What is the chemical that is sometimes described as the blueprint of life?
- DNA (correct)
- Carbohydrate
- RNA
- Protein
Where is DNA found in a cell?
Where is DNA found in a cell?
- Endoplasmic Reticulum
- Cytoplasm
- Nucleus (correct)
- Mitochondria
What is the term for the observable characteristics or appearance of an organism?
What is the term for the observable characteristics or appearance of an organism?
- Genotype
- Karyotype
- Allele
- Phenotype (correct)
During cell division, what are the visible strands of DNA known as?
During cell division, what are the visible strands of DNA known as?
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What is the section of DNA responsible for a particular trait called?
What is the section of DNA responsible for a particular trait called?
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How many pairs of chromosomes do normal human body cells have?
How many pairs of chromosomes do normal human body cells have?
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Study Notes
DNA and Genetics
- DNA (Deoxyribonucleic acid) is sometimes described as the blueprint of life.
- DNA is found in the nucleus of a cell.
Genetic Traits
- The term for the observable characteristics or appearance of an organism is known as the phenotype.
Cell Division
- During cell division, the visible strands of DNA are known as chromosomes.
Genes and Traits
- A section of DNA responsible for a particular trait is called a gene.
Human Chromosomes
- Normal human body cells have 23 pairs of chromosomes.
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