Biology - Genetics - Basic - Genes and chromosomes - Chromosomes, Genes, and Alleles

4 steps. Step 1: 'CHROMOSOMES - Humans have 46 chromosomes (23 pairs). You got 23 from mom and 23 from dad. Pair 23 determines sex: XX = female, XY = male. Chromosomes are DNA wound around histone proteins (like thread on a spool).' Step 2: 'HOMOLOGOUS PAIRS - Chromosome pairs carry genes for the SA

Edodovivmagarwal
Biology - Genetics - Basic - Genes and chromosomes - Chromosomes, Genes, and Alleles
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Biology - Genetics - Basic - Genes and chromosomes - Chromosomes, Genes, and Alleles

vivmagarwal
vivmagarwalJan 29, 2026

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4 steps. Step 1: 'CHROMOSOMES - Humans have 46 chromosomes (23 pairs). You got 23 from mom and 23 from dad. Pair 23 determines sex: XX = female, XY = male. Chromosomes are DNA wound around histone proteins (like thread on a spool).' Step 2: 'HOMOLOGOUS PAIRS - Chromosome pairs carry genes for the SA

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BiologyGenetics - BasicClass 10, IGCSE, Class 10, MYP Grade 10, Grade 10

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