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Inheritance and Survival

Inheritance and Survival. Inheritance of sex Extra “mini” coursework Nature versus Nurture. Lesson Aims. To understand how sex is inherited and the importance of chromosome pair 23 Investigate effect of cigarette smoke on the growth of the foetus

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Inheritance and Survival

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  1. Inheritance and Survival Inheritance of sex Extra “mini” coursework Nature versus Nurture

  2. Lesson Aims • To understand how sex is inherited and the importance of chromosome pair 23 • Investigate effect of cigarette smoke on the growth of the foetus • Explore the relationships between our genes and the environment

  3. Inheritance of sex

  4. Sex chromosomes • Every cell in the human body has 46 chromosomes. • There are 22 pairs of chromosomes. • The two other chromosomes do not always look alike.

  5. Sex chromosomes • They are called the sex chromosomes. • Every female cell has two sex chromosomes which are alike (XX)

  6. Sex chromosomes • Every male cell has two chromosomes which are not alike (XY)

  7. cells in testis of male cell in ovary of female XY XX

  8. cells in testis of male cell in ovary of female XY XX there are two types of sperm X Y

  9. cells in testis of male cell in ovary of female XY XX X there are two types of sperm there is only one type of ovum X X Y

  10. cells in testis of male cell in ovary of female XY XX X there are two types of sperm there is only one type of ovum X X Y

  11. cells in testis of male cell in ovary of female XY XX X there are two types of sperm there is only one type of ovum X X Y Y X

  12. cells in testis of male cell in ovary of female XY XX X there are two types of sperm there is only one type of ovum X X Y X X Y X

  13. cells in testis of male cell in ovary of female XY XX X there are two types of sperm there is only one type of ovum X X Y X X Y X

  14. Sex chromosomes • The sex of the baby depends on which type of sperm fertilises the ovum. • The chances of the baby being a boy (XY) or a girl (XY) are equal.

  15. Smoking babies! A mini coursework exercise

  16. Follow the instructions on the sheet you are given. • All to be done on paper and lined paper!

  17. Nature versus nurture Read the sheet given out!

  18. IQ Test Do the IQ test!

  19. IQ test answers • 4 • DUAL • 10 • 2 • NIROY (irony; steel; copper; bronze) • PILE • 52 • 66 • KOYNED (purple; donkey; azure; violet) • 44 • 1 • 6 • ONE

  20. IQ test answers • 6 • 77 • 3 • V and M (spells PAVEMENT) • BUSH • 484 (783-541 x 2) • SING • 24 (0+3, 3+5, 8+7, 15 + 9) What????? • STUN • TIGHT • 5 • NOSE

  21. IQ test answers • 35 (1+7, 8+8, 16+9, 25+10) • 6 • CRACK • W • 4 • 4 • I and P (DEPOSITS) • NIPS • STOMACH • S over V • POST • 55 • 6 • GLAD

  22. Nature versus Nurture Discussion sheet

  23. Nature versus nurture

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