What do x and y chromosomes combine in making?

More Questions:

Which artist painted "American Gothic"?

What is the capital of Mauritius?

The Panama Canal connects the Gulf of Panama and which sea?

What is crossed with a blackberry and loganberry to produce a boysenberry?

What two planets in our solar system have no moons?

Wilhelm Roentgen won the first Nobel Prize in Physics for discovering what kind of radiation?

A tree which is deciduous does what?

A Polyorchid has at least three what?

Which actress played the role of Amelie in the 2001 movie "Amelie"?

In the book and movie "Cujo', way sort of a dog is Cujo?

What is the practical purpose of the Pharos of Alexandria?

What "trail" did thousands of pioneers follow to Oregon during the 1800s?

What world leader was awarded the 1953 Nobel Prize for Literature?

Petrology the study of what?

Who recorded the albums "Into the Fire" and "Waking Up the Neighbours"?