Ever wondered what makes you uniquely you? DNAis the...
Biology582 views·Updated 30 Aug 2026·1 pageUnderstanding the Basics of DNA and Genetics
𝐚𝐧𝐨𝐮𝐬𝐡𝐡𝐡.⋆.𝜗𝜚. ✩@its_anoushka
1
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DNA and Genetics Basics
DNA stands for deoxyribonucleic acid, and it's basically the instruction manual for building you! This amazing chemical forms your genes and exists as a polymer made of two strands twisted together in a famous shape called the double helix.
Here's something mind-blowing: if you stretched out all the DNA from just one of your cells, it would reach about 1 metre long. Your body manages to pack all this information into tiny spaces by coiling the DNA into 46 sections called chromosomes.
You actually only have 23 different types of chromosomes, but you get two copies of each - one from your mum and one from your dad. The 23rd pair is special because these are the sex chromosomes that determine whether you're biologically male or female. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
Quick Tip: Remember that a gene is just a small section of DNA that codes for specific proteins, whilst your genome is your entire set of genetic material - and it's completely unique to you (unless you're an identical twin)!
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Biology582 views·Updated 30 Aug 2026·1 pageUnderstanding the Basics of DNA and Genetics
𝐚𝐧𝐨𝐮𝐬𝐡𝐡𝐡.⋆.𝜗𝜚. ✩@its_anoushka
Ever wondered what makes you uniquely you? DNAis the incredible chemical blueprint that creates every living thing on Earth, from your eye colour to your height. Understanding genetics helps explain how traits pass from parents to children and why...
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DNA and Genetics Basics
DNA stands for deoxyribonucleic acid, and it's basically the instruction manual for building you! This amazing chemical forms your genes and exists as a polymer made of two strands twisted together in a famous shape called the double helix.
Here's something mind-blowing: if you stretched out all the DNA from just one of your cells, it would reach about 1 metre long. Your body manages to pack all this information into tiny spaces by coiling the DNA into 46 sections called chromosomes.
You actually only have 23 different types of chromosomes, but you get two copies of each - one from your mum and one from your dad. The 23rd pair is special because these are the sex chromosomes that determine whether you're biologically male or female. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).
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We thought you’d never ask...
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That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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