The combination of genes an organism has for a trait. For example: Tt or TT (T = tall height)

The different versions of a gene. For example: yellow vs. green seeds

The type of allele that is always expressed and is represented by a capital letter.

The type of allele that can be masked so needs two copies to be expressed, and is represented by a lower case letter.

Study of how traits are passed from parent to offspring

What is a trait as defined in genetics?

A segment of DNA that codes for a trait. The unit of inheritance.

Eye color, hair color, having freckles, etc. are examples of:

Who is the Father of Genetics?

A bundle of DNA containing many genes is called a