VANDA_Grade 6.pptxVANDA GRADE 6 PowerPoint for Vanda Science Competition

Past Year Paper for Vanda competition

1. VANDA

2. Circulatory System

3. Exercise

4. No. 9

5. No. 10

6. No. 1 1

7. No. 1 2

8. VANDA

9. No. 1 3

10. No. 14

11. No. 15

12. No. 16

13. No. 17

14. No. 18

15. No. 19

16. No. 20

17. No. 20

Below isan example of how sickle cell disease can be passed from parent to child

The abnormal haemoglobin 5, is coded for by the haemoglobin S gene. People who have the

Unaffected Unaffected sickle cell trait (known as carriers) are generally healthy, very rarely do they have complications
“Carter” “Carrier similar to people with sickle cell disease. Based on the above diagram, which of the following
Father Mother

outcomes is possible?

A) Parents who are not sickle cell patients or do not have the sickle cell trait can have

If both parents are sickle cell patients, all their children will technically be diagnosed

with sickle cell disease.

Y © There is a 50% chance that the children of parents (one of whom does not have sickle
cell disease nor has the sickle cell trait and the other having the sickle cell trait) will be
diagnosed with sickle cell disease.

D) There is a 25% chance that the children of parents (one of whom does not have sickle
cell disease nor has the sickle cell trait and the other having the sickle cell trait) will have
the sickle cell trait.

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Children