Biology Past Questions and Answers

If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal?

Which of the following is an example of discontinuous variation?

The hormones which regulates the amount of glucose in the blood is called

An instrument that can be used to demonstrate phototropism and geotropism in plants is the

In an ecosystem, animals which feed directly on plants are called