9th - 12th grade
A version or variation of a gene
When an organism has two of the same alleles, it is called
This type of allele is expressed whether there are one or two copies present.
These types of alleles are only expressed if the organism has two copies
A segment of DNA that has the ability to code for a specific trait.
Recessive alleles are found less frequently among organisms
What is the phenotypic ratio when you cross Tt with tt?
T = tall, t = short
The following ratios are for Tall : Short
A skin cell is different from an eye cell because they contain different genes