Inheritance
Chromosomes <ul><li>Chromosomes are thread like structures found in the cell nucleus </li></ul><ul><li>Human cells have 46...
 
<ul><li>Chromosomes occur in pairs inside the nucleus </li></ul><ul><li>In each pair, one chromosome comes from the male p...
Karyotype of a female
Sex Chromosomes <ul><li>The gender of an organism is determined by its sex chromosomes. </li></ul><ul><li>In most species ...
<ul><li>All eggs contain a single X chromosome </li></ul><ul><li>Half of the sperms from a male contain Y chromosome and t...
DNA <ul><li>DNA stands for deoxyribonucleic acid </li></ul><ul><li>It carries all the information a cell requires </li></ul>
 
DNA <ul><li>DNA looks like a spiral ladder. </li></ul>
 
Gene <ul><li>A gene is a segment of DNA containing the instruction for the formation of one particular protein. </li></ul>...
Haploid & Diploid condition <ul><li>Haploid nucleus contains a single set of unpaired chromosomes. </li></ul><ul><ul><li>G...
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Inheritance

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Inheritance

  1. 1. Inheritance
  2. 2. Chromosomes <ul><li>Chromosomes are thread like structures found in the cell nucleus </li></ul><ul><li>Human cells have 46 chromosomes </li></ul><ul><li>The gametes (sperm & egg) have only 23 chromosomes </li></ul><ul><li>The 46 chromosomes in the body cells are copies of the 23 from mother’s egg and the 23 from the father’s sperm </li></ul><ul><li>Chromosomes are made up of DNA and proteins (histones) </li></ul>
  3. 4. <ul><li>Chromosomes occur in pairs inside the nucleus </li></ul><ul><li>In each pair, one chromosome comes from the male parent, the other from the female. </li></ul><ul><li>This is why people look similar to their parents but not exactly like either of them </li></ul>Human Chromosomes
  4. 5. Karyotype of a female
  5. 6. Sex Chromosomes <ul><li>The gender of an organism is determined by its sex chromosomes. </li></ul><ul><li>In most species there are two types of sex chromosomes, X and Y </li></ul><ul><li>Females have two X chromosomes in each of their body cells </li></ul><ul><li>Males have an X and a Y chromosome in each cell </li></ul>
  6. 7. <ul><li>All eggs contain a single X chromosome </li></ul><ul><li>Half of the sperms from a male contain Y chromosome and the other half contain X chromosome </li></ul>
  7. 8. DNA <ul><li>DNA stands for deoxyribonucleic acid </li></ul><ul><li>It carries all the information a cell requires </li></ul>
  8. 10. DNA <ul><li>DNA looks like a spiral ladder. </li></ul>
  9. 12. Gene <ul><li>A gene is a segment of DNA containing the instruction for the formation of one particular protein. </li></ul><ul><li>Humans have around 30,000 genes. </li></ul><ul><li>“ Genetics is the science of genes, heredity, and the variation of organisms”. </li></ul>
  10. 13. Haploid & Diploid condition <ul><li>Haploid nucleus contains a single set of unpaired chromosomes. </li></ul><ul><ul><li>Gametes </li></ul></ul><ul><li>Diploid nucleus contains two sets of chromosomes </li></ul><ul><ul><li>Body cells </li></ul></ul>

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