Define and distinguish back cross and test cross

Back cross is

Define and design a test − cross?

Define test cross.

The genotypic ratio an phenotyti ratio of back cross and test cross of a mendelian monohybrid respectively

How do the back cross and test cross from each other?

What is the main purpose of a test cross ?

Result of test cross is

Give the use of test cross.

Which of the folloiwng statement/s about test cross is/are correct? I. Every test cross is a back cross, but not every back cross is a test cross. II. Every back cross is a test cross but not every test cross is a back cross. III. The ratio of a test cross is always 1:1. IV. A test cross can be considered as a type of reciprocal cross.