Crossing two brown mice produced an offspring with a black coat.Which of the following statements MUST be correct?
Ⅰ Brown coat is dominant to black.
Ⅱ The brown mice were heterozygous for coat colour.
Ⅲ The black mouse was homozygous for coat colour.
Ⅳ Crossing a black mouse with another black mouse could produce a brown offspring.
2. Question | Integrated Science
Which statement is not true of sperm and ova?
3. Question | Integrated Science
Many leaves are adapted to photosynthesise effectively by having:
4. Question | Biology
Enzymes are called biological catalysts because they:
5. Question | Mathematics
A man bought a shirt at a sale. He saves $30 on the normal price when he paid $120 for the shirt. What was the percentage discount on the shirt?
6. Question | Mathematics
How much simple interest is due on a loan
of $120 for two years if the annual rate of
interest is 5 1/2 per cent?
7. Question | Principles Of Accounts
A trader received an invoice for $4,000 less 25% trade discount. Subsequently he returned one eighth of the goods. What amount would be entered in his Returns Outwards Account?
8. Question | Biology
Oxygen is carried around the body by the:
9. Question | Integrated Science
Some foods contain flavour enhancers. These food additives:
10. Question | Chemistry
The state symbol for a solution in water is:
11. Question | Information Technology
Large-scale applications sometimes refer to a graphic tablet as a __________.
12. Question | Physics
The existence of a neutral particle named the neutron was first confirmed experimentally by:
13. Question | Chemistry
The type of polymerisation used to make polythene is called:
14. Question | Chemistry
A plastic that softens every time it is heated is said to be:
15. Question | Mathematics
0.045 × 10-3 in scientific notation is
16. Question | Chemistry
Particles are furthest apart in:
17. Question | Mathematics
Which of the following is a prime number?
18. Question | Mathematics
If x = 23 × 52 =, then x4 =
19. Question | Physics
A force of 100 N starts to act on a body of mass 20 kg which is initially at rest. After 10 s its
velocity will be:
20. Question | Principles Of Accounts
John Jones pays his employees by cash. How will he record this payment in his books?